User Interface (UI) Misrepresentation of Critical Information Affecting symfony/html-sanitizer package, versions <6.4.40>=7.0.0-BETA1, <7.4.12>=8.0.0-BETA1, <8.0.12
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-SYMFONYHTMLSANITIZER-16873892
- published24 May 2026
- disclosed20 May 2026
- creditNicolas Grekas
Introduced: 20 May 2026
CVE-2026-45064 (opens in a new tab)How to fix?
Upgrade symfony/html-sanitizer to version 6.4.40, 7.4.12, 8.0.12 or higher.
Overview
symfony/html-sanitizer is a Provides an object-oriented API to sanitize untrusted HTML input for safe insertion into a document's DOM.
Affected versions of this package are vulnerable to User Interface (UI) Misrepresentation of Critical Information via UrlSanitizer::parse() in the HtmlSanitizer component. An attacker can perform visual spoofing or phishing attacks by supplying URLs containing Unicode bidirectional formatting characters, which are preserved in sanitized href and src attributes. When rendered in a browser, these characters alter the visual ordering of the displayed URL, causing it to appear different from the actual destination.