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2.3

Zammad agents can view AI error messages from restricted tickets

CVE-2026-63204 · published 24 days ago
Summary

In Zammad versions before 7.1.2, a logged‑in support agent could request an AI summary using any identifier and receive the error message generated for that AI run, even when the related ticket was not theirs. This does not expose the ticket’s actual content, but it leaks internal error details that may reveal system information. Upgrade Zammad to version 7.1.2 or later to stop the leakage.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
zammad zammad < 7.1.2
Original advisory text
Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
2.3 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-639Authorization Bypass Through User-Controlled Key
CWE-862Missing Authorization
Timeline
Published25 Sep 2026
Updated19 Oct 2026
First seen25 Sep 2026
Sources
CVE-2026-63204 · NVD
CVE-2026-63204 · MITRE
CVE-2026-63204 · OSV
GHSA-75j9-hpg4-j9f8 · GHSA
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