CVE-2026-63006CWE-22path-traversal

CVE-2026-63006

published September 25, 2026

CVSS
5.3
EPSS
0%
Percentile
40.5
In the wild
Unconfirmed
What it is

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. This issue is fixed in version 7.1.2.

The record
Technical detail
CVSS
5.3 · NONE
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00480 · 40.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-25T23:17Z
References (2)
https://github.com/zammad/zammad/commit/856af85c12413087d6a74ffee25b16048a5ed8c3 · [email protected]https://github.com/zammad/zammad/security/advisories/GHSA-33p2-cm7w-62g3 · [email protected]
EPSS history
Timeline
  • 27 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 25 SEP 18:23Z
    Zammad: HTML sanitizer API path allowlist bypass via interior path traversal in img src/srcset
    cvelistv5