CVE-2026-48760

Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks and Unicode Whitespace Bypass Visual-Spoofing Defense

Published: Jul 14, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-451

6.1MEDIUM

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlSanitizer::parse() rejected raw BiDi formatting characters but not percent-encoded forms and used an ASCII-only whitespace check, allowing sanitized URLs to retain visual-spoofing characters that downstream consumers could decode or display. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-451 CWE-1007

Affected Products

symfony

oss-projectaka symfony framework, twig (related)

symfonyLibrary

OSS Libraries / web-framework

html-sanitizerLibrary

OSS Libraries / web-framework

sensiolabs

oss-project

symfonyLibraryLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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References

https://github.com/symfony/symfony/commit/b21a626fd90f5c12d2db432c629eed3e780ba2f8

github.com

https://github.com/symfony/symfony/releases/tag/v6.4.41

github.com

https://github.com/symfony/symfony/releases/tag/v7.4.13

github.com

and 2 more references View all →

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