Description
Apache HTTP Server 2.4.65 and earlier with Server Side Includes (SSI) enabled and mod_cgid (but not mod_cgi) passes the shell-escaped query string to #exec cmd="..." directives.
This issue affects Apache HTTP Server before 2.4.66.
Users are recommended to upgrade to version 2.4.66, which fixes the issue.
Metrics
CVSS 3.1 8.3/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:LWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | < 2.4.66 |
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/12/04/5Mailing List, Third Party Advisory
Timeline
- Published
- Dec 5, 2025
- Last modified
- Sep 25, 2026
- NVD status
- Analyzed