CVE-2026-45064

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.

Is your site exposed to CVE-2026-45064?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-451 CWE-451

CWE-1007 CWE-1007

References

Other References

https://github.com/symfony/symfony/commit/743a435e948b897ef2b5564ac438d4beb95d2526 https://github.com/symfony/symfony/releases/tag/v6.4.40 https://github.com/symfony/symfony/releases/tag/v7.4.12 https://github.com/symfony/symfony/releases/tag/v8.0.12 https://github.com/symfony/symfony/security/advisories/GHSA-h5vq-qfcg-4m6p

Frequently Asked Questions

What is CVE-2026-45064? +

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.

How do I check if I'm vulnerable to CVE-2026-45064? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2024-52277

User Interface (UI) Misrepresentation of Critical Information vulnerability in DocuSeal allows Content Spoofing.Displayed version does not show the layer flattened …

CVE-2024-52270

User Interface (UI) Misrepresentation of Critical Information vulnerability in DropBox Sign(HelloSign) allows Content Spoofing. Displayed version does not show the …

CVE-2024-52271

User Interface (UI) Misrepresentation of Critical Information vulnerability in Documenso allows Content Spoofing.Displayed version does not show the layer flattened …

CVE-2026-48760

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until …

CVE-2025-8043 9.8

Focus incorrectly truncated URLs towards the beginning instead of around the origin. This vulnerability was fixed in Firefox 141.

CVE-2025-31951 8.8

HCL BigFix RunBookAI is affected by a Unvalidated Command Input / Potential Command Smuggling vulnerability. A flaw in a component's …