CVE-2026-63006
Zammad: HTML sanitizer API path allowlist bypass via interior path traversal in img src/srcset
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | zammad |
| Product | zammad |
| Published | Sep 25, 2026 |
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Affected Versions
zammad / zammad
< 7.1.2