CVE-2023-46734 - CVE House

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Status published Medium CVE-2023-46734

Symfony potential Cross-site Scripting vulnerabilities in CodeExtension filters

6.1 CVSS

Vulnerability Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 2.0.0, 5.0.0, and 6.0.0 and prior to versions 4.4.51, 5.4.31, and 6.3.8, some Twig filters in CodeExtension use `is_safe=html` but don't actually ensure their input is safe. As of versions 4.4.51, 5.4.31, and 6.3.8, Symfony now escapes the output of the affected filters.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Symphony has an Authentication Bypass via RememberMe

Command execution hijack on Windows with Process class in symfony/process

Open redirect via browser-sanitized URLs in symfony/http-foundation

Affected Vendor

symfony

View all reports →

Affected Software

symfony

Vulnerable Versions:

>= 2.0.0, < 4.4.51, >= 5.0.0, < 5.4.31, >= 6.0.0, < 6.3.8

Timeline

Official Publish: November 10th, 2023

Last Modified: February 13th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement