Zammad Security Advisory Archive

Browse our previously published security advisories here.
For the latest updates, visit our GitHub security advisory page.

Security Advisories on GitHub

2026

Security Advisory

ZAA-2026-07

This is the last security advisory published on the Zammad website. Going forward, all advisories will be available on GitHub. 8 April 2026
Security Advisory

ZAA-2026-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026
Security Advisory

ZAA-2026-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026
Security Advisory

ZAA-2026-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026
Security Advisory

ZAA-2026-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026
Security Advisory

ZAA-2026-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026
Security Advisory

ZAA-2026-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 4 March 2026

2025

Security Advisory

ZAA-2025-09

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 24 September 2025
Security Advisory

ZAA-2025-08

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 24 September 2025
Security Advisory

ZAA-2025-07

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 24 September 2025
Security Advisory

ZAA-2025-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 13 August 2025
Security Advisory

ZAA-2025-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 13 August 2025
Security Advisory

ZAA-2025-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 2 April 2025
Security Advisory

ZAA-2025-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 2 April 2025
Security Advisory

ZAA-2025-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 2 April 2025
Security Advisory

ZAA-2025-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 2 April 2025

2024

Security Advisory

ZAA-2024-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 December 2024
Security Advisory

ZAA-2024-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 15 May 2024
Security Advisory

ZAA-2024-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 17 April 2024
Security Advisory

ZAA-2024-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 17 April 2024
Security Advisory

ZAA-2024-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 17 April 2024

2023

Security Advisory

ZAA-2023-08

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 6 December 2023
Security Advisory

ZAA-2023-07

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 6 December 2023
Security Advisory

ZAA-2023-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 6 December 2023
Security Advisory

ZAA-2023-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 6 December 2023
Security Advisory

ZAA-2023-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 6 December 2023
Security Advisory

ZAA-2023-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 12 April 2023
Security Advisory

ZAA-2023-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 14 March 2023
Security Advisory

ZAA-2023-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 14 March 2023

2022

Security Advisory

ZAA-2022-13

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 21 September 2022
Security Advisory

ZAA-2022-12

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 21 September 2022
Security Advisory

ZAA-2022-11

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 21 September 2022
Security Advisory

ZAA-2022-10

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 13 September 2022
Security Advisory

ZAA-2022-09

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 13 September 2022
Security Advisory

ZAA-2022-08

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 July 2022
Security Advisory

ZAA-2022-07

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 July 2022
Security Advisory

ZAA-2022-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 July 2022
Security Advisory

ZAA-2022-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 July 2022
Security Advisory

ZAA-2022-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 20 April 2022
Security Advisory

ZAA-2022-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 20 April 2022
Security Advisory

ZAA-2022-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 14 March 2022
Security Advisory

ZAA-2022-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 14 March 2022

2021

Security Advisory

ZAA-2021-21

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 7 December 2021
Security Advisory

ZAA-2021-20

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 28 October 2021
Security Advisory

ZAA-2021-19

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 October 2021
Security Advisory

ZAA-2021-18

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-17

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-16

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-15

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-14

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-13

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-12

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-11

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-10

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-09

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-08

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 5 October 2021
Security Advisory

ZAA-2021-07

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 8 June 2021
Security Advisory

ZAA-2021-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 16 March 2021

2020

Security Advisory

ZAA-2020-24

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 16 November 2020
Security Advisory

ZAA-2020-23

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 16 November 2020
Security Advisory

ZAA-2020-22

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 16 November 2020
Security Advisory

ZAA-2020-21

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-20

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send information regarding vulnerabilities in Zammad to: security at zammad.com 22 September 2020
Security Advisory

ZAA-2020-19

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-18

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-17

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-16

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-15

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-14

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 22 September 2020
Security Advisory

ZAA-2020-13

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 15 June 2020
Security Advisory

ZAA-2020-12

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 15 June 2020
Security Advisory

ZAA-2020-11

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-10

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-09

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-08

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-07

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-06

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-05

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-04

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-03

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-02

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020
Security Advisory

ZAA-2020-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 3 March 2020

2019

Security Advisory

ZAA-2019-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 14 February 2019

2018

Security Advisory

ZAA-2018-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 29 March 2018

2017

Security Advisory

ZAA-2017-01

Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad! 15 February 2017
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