Is CVE-2026-63204 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-63204 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

No public exploit code is known.

No fixed version is listed yet; check the vendor advisory for mitigations.

Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Low

Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets

Published Sep 25, 2026 · Updated Sep 30, 2026

The full analysis for this CVE is not ready yet, so this page shows the scores and scope from the public record. How CVEs are selected

Routine patching

CVE-2026-63204 is a low-severity vulnerability (CVSS 2.3).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

CVSS

2.3

EPSS (30-day exploit likelihood)

n/a

Exploit maturity

None known

ATLAS score

n/a

Outside the curated set

FAQ

Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.