CVE-2026-45066
2.3
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
Summary
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, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts() or allowMediaHosts() because UrlSanitizer::parse() follows RFC 3986 while browsers follow WHATWG URL parsing, and because <area href> is checked against the media policy rather than the link policy. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| symfony | symfony | >= 6.1.0-BETA1, < 6.4.40 | affected |
| symfony | symfony | >= 7.0.0-BETA1, < 7.4.12 | affected |
| symfony | symfony | >= 8.0.0-BETA1, < 8.0.12 | affected |
| symfony | html-sanitizer | >= 6.1.0-BETA1, < 6.4.40 | affected |
| symfony | html-sanitizer | >= 7.0.0-BETA1, < 7.4.12 | affected |
| symfony | html-sanitizer | >= 8.0.0-BETA1, < 8.0.12 | affected |
Weaknesses
- CWE-184: CWE-184: Incomplete List of Disallowed Inputs
- CWE-436: CWE-436: Interpretation Conflict
References
- https://github.com/symfony/symfony/security/advisories/GHSA-qc95-4862-92fh
- https://github.com/symfony/symfony/commit/d506b556d3d3906f3e8660ad82257ce87edbaac4
- 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
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