symfony/html-sanitizer vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary

CVE-2026-48760Mediumsymfony/html-sanitizer: Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks and Unicode Whitespace Bypass Visual-Spoofing…CVE-2026-48761Mediumsymfony/html-sanitizer: Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes CVE-2026-45753Lowsymfony/html-sanitizer: Symfony's HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite — `javascript`: URI Survives Sanitization (XSS)CVE-2026-45066Mediumsymfony/html-sanitizer: Symfony has an HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URL-Parser Differentials and <area> Misclassification CVE-2026-45064Mediumsymfony/html-sanitizer: Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing

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