CVE-2026-45064

Symfony: HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing

Published: Jul 14, 2026Updated: Jul 21, 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-BETA1 until 6.4.40, 7.4.12, and 8.0.12, UrlSanitizer::parse() passes Unicode explicit-direction BiDi formatting characters through into sanitized href and src attributes, allowing sanitized content to display a link destination that visually differs from the actual destination and enabling phishing-style visual spoofing. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

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/743a435e948b897ef2b5564ac438d4beb95d2526

github.com

https://github.com/symfony/symfony/releases/tag/v6.4.40

github.com

https://github.com/symfony/symfony/releases/tag/v7.4.12

github.com

and 2 more references View all →

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