VULNERABILITY INTELLIGENCE
CVE-2026-45753
CVSS score6.1 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2026-07-14
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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, UrlAttributeSanitizer::getSupportedAttributes() omits URL-valued attributes including action, formaction, poster, and cite, so configurations that admit those attributes can leave javascript: URIs unsanitized and enable XSS when the resulting HTML is rendered or a victim submits a form or clicks a button. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
Weakness classification
- security-advisories@github.com: CWE-79
Primary references
- security-advisories@github.com — Patch
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Patch, Vendor Advisory