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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45064
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-14 19:17:05 UTC
Updated2026-07-21 20:17:00 UTC
DescriptionSymfony 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.

Risk And Classification

Primary CVSS: v4.0 2.3 LOW from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.004660000 probability, percentile 0.373500000 (date 2026-07-15)

Problem Types: CWE-451 | CWE-1007 | CWE-451 CWE-451: User Interface (UI) Misrepresentation of Critical Information | CWE-1007 CWE-1007: Insufficient Visual Distinction of Homoglyphs Presented to User

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.3LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/C...
4.0CNADECLARED2.3LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
Passive
Confidentiality
None
Integrity
None
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Sensiolabs Symfony All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Symfony Symfony affected >= 6.1.0-BETA1, < 6.4.40 Not specified
CNA Symfony Symfony affected >= 7.0.0-BETA1, < 7.4.12 Not specified
CNA Symfony Symfony affected >= 8.0.0-BETA1, < 8.0.12 Not specified
CNA Symfony Html-sanitizer affected >= 6.1.0-BETA1, < 6.4.40 Not specified
CNA Symfony Html-sanitizer affected >= 7.0.0-BETA1, < 7.4.12 Not specified
CNA Symfony Html-sanitizer affected >= 8.0.0-BETA1, < 8.0.12 Not specified

References

ReferenceSourceLinkTags
github.com/symfony/symfony/releases/tag/v6.4.40 [email protected] github.com Product, Release Notes
github.com/symfony/symfony/security/advisories/GHSA-h5vq-qfcg-4m6p [email protected] github.com Vendor Advisory
github.com/symfony/symfony/releases/tag/v8.0.12 [email protected] github.com Product, Release Notes
github.com/symfony/symfony/releases/tag/v7.4.12 [email protected] github.com Product, Release Notes
github.com/symfony/symfony/commit/743a435e948b897ef2b5564ac438d4beb95d2526 [email protected] github.com Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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