Low severity · published Sep 25, 2026
CVE-2026-63204
Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets
2.3
CVSS
0.3%
EPSS
No
On KEV
Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, an authenticated user with agent permissions can supply an arbitrary AI analytics run identifier to the ticket summarize endpoint and receive the AI provider error message stored for that run, even if the run belongs to a ticket the agent is not authorized to access. The disclosure is limited to the provider error string; ticket content is not exposed. This issue is fixed in version 7.1.2.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
zammad · zammad
< 7.1.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63204
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63204
github.com
https://github.com/zammad/zammad/commit/849191c32a76f62fbd7cf4582a2b1e05e25f25ed
github.com
https://github.com/zammad/zammad/security/advisories/GHSA-75j9-hpg4-j9f8
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