CVE-2016-1000104
mod_fcgid: mod_fcgid sets environmental variable based on user supplied Proxy request header
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · July 18, 2016
Updated · November 22, 2025
Description
A security Bypass vulnerability exists in the FcgidPassHeader Proxy in mod_fcgid through 2016-07-07.
Statement
This issue is addressed through the Apache HTTPD update for CVE-2016-5387 which prevent the Proxy header from automatically being converted into the HTTP_PROXY environmental variable. Unless the "FcgidPassHeader Proxy" is used mod_fcgid is not vulnerable to this attack when used with updated HTTPD. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
CVSS 2.0 · 5AV:N/AC:L/Au:N/C:N/I:P/A:N
CWE-20 · Improper Input Validation