CVE-2025-58098: Apache HTTP Server: Server Side Includes adds query string to #exec cmd=...

[Eric Covener <covener () apache org>]

Severity: low 

Affected versions:

- Apache HTTP Server before 2.4.66

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.

Credit:

Anthony Parfenov (United Rentals, Inc.) (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-58098

Timeline:

2025-08-21: Reported to security team
2025-12-01: fixed in 2.4.x by r1930165