Detections
Analytics
SCA: security update for symfony/http-kernel, symfony/symfony (GHSA-q3j3-w37x-hq2q)
medium Tenable Cloud Security Plugin ID 417839
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console
applications and a set of reusable PHP components. Headers that are not part of the "trusted_headers"
allowed list are ignored and protect users from "Cache poisoning" attacks. In Symfony 5.2, maintainers
added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if
it was not part of the "trusted_headers" allowed list. An attacker could leverage this opportunity to
forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions
5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to
subrequests when it is not trusted. (CVE-2021-41267)
See Also
Plugin Details
Severity: Medium
ID: 417839
Version: Revision 1.6
Type: Local
Family: SCA Checks
Published: 1/23/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.18
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2021-41267
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 11/24/2021
Vulnerability Publication Date: 11/24/2021
Reference Information
CVE: CVE-2021-41267
cwe: CWE-444