CVE WatchJul 16, 2026

CVE-2026-45066

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

CVSS

6.1

Medium

EPSS

0.3%

p21

KEV

—

Exploit Today

0-100

Published: Jul 14, 2026 · Last modified: Jul 16, 2026 · CWE-184 · CWE-436

EPSS · 30d

0.3%EPSS · 30 days0.5%

2026-07-152026-07-16

Technical 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, 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.

Official references

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