CVE-2026-45066Symfony is a PHP framework for web and console applications and a set of reusable PHP components.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-184, CWE-436
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sensiolabs symfony sensiolabs:symfony | from 6.1.0 before 6.4.40; from 7.0.0 before 7.4.12; from 8.0.0 before 8.0.12 | NVD |
References
- https://github.com/symfony/symfony/commit/d506b556d3d3906f3e8660ad82257ce87edbaac4patch
- https://github.com/symfony/symfony/releases/tag/v6.4.40product, release-notes
- https://github.com/symfony/symfony/releases/tag/v7.4.12product, release-notes
- https://github.com/symfony/symfony/releases/tag/v8.0.12product, release-notes
- https://github.com/symfony/symfony/security/advisories/GHSA-qc95-4862-92fhpatch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.