CVE-2026-48760
Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks and Unicode Whitespace Bypass Visual-Spoofing Defense
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 14, 2026
- Updated
- Jul 15, 2026
- Reserved
- May 22, 2026
Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlSanitizer::parse() rejected raw BiDi formatting characters but not percent-encoded forms and used an ASCII-only whitespace check, allowing sanitized URLs to retain visual-spoofing characters that downstream consumers could decode or display. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
symfonysymfony |
|
html-sanitizersymfony |
|
References
- https://github.com/symfony/symfony/security/advisories/GHSA-v3wm-qf9p-c549
- https://github.com/symfony/symfony/commit/b21a626fd90f5c12d2db432c629eed3e780ba2f8
- https://github.com/symfony/symfony/releases/tag/v6.4.41
- https://github.com/symfony/symfony/releases/tag/v7.4.13
- https://github.com/symfony/symfony/releases/tag/v8.0.13
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