CVE-2026-63204CWE-639CWE-862broken-access-control

CVE-2026-63204

published September 25, 2026

CVSS
2.3
EPSS
0%
Percentile
20.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
2.3 · NONE
CVSS v4.0
2.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00288 · 20.3th percentile
Weaknesses
CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-862 · Missing Authorization
Published
2026-09-25T23:17Z
References (2)
https://github.com/zammad/zammad/commit/849191c32a76f62fbd7cf4582a2b1e05e25f25ed · [email protected]https://github.com/zammad/zammad/security/advisories/GHSA-75j9-hpg4-j9f8 · [email protected]
EPSS history
Timeline
  • 27 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 25 SEP 18:22Z
    Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets
    cvelistv5