Vulnerability in Sensiolabs Symfony
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Sensiolabs Symfony
- Symfony Html-Sanitizer — versions >= 6.1.0-BETA1, < 6.4.40, >= 7.0.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12
- Symfony — versions >= 6.1.0-BETA1, < 6.4.40, >= 7.0.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12
Weakness classification (CWE)
References
- github.com/symfony/symfony/security/advisories/GHSA-h5vq-qfcg-4m6p (Vendor Advisory)
- github.com/symfony/symfony/commit/743a435e948b897ef2b5564ac438d4beb95d2526 (Patch)
- github.com/symfony/symfony/releases/tag/v6.4.40 (Product, Release Notes)
- github.com/symfony/symfony/releases/tag/v7.4.12 (Product, Release Notes)
- github.com/symfony/symfony/releases/tag/v8.0.12 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-45064?
- CVE-2026-45064 is a medium-severity vulnerability in Sensiolabs Symfony, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 6.1/10. Published 2026-07-14.
- How severe is CVE-2026-45064?
- Medium severity. CVSS v3 base score is 6.1 out of 10.