CVE-2026-48784
5.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| symfony | symfony | < 5.4.53 | affected |
| symfony | symfony | >= 6.0.0-BETA1, < 6.4.41 | affected |
| symfony | symfony | >= 7.0.0-BETA1, < 7.4.13 | affected |
| symfony | symfony | >= 8.0.0-BETA1, < 8.0.13 | affected |
| symfony | routing | < 5.4.53 | affected |
| symfony | routing | >= 6.0.0-BETA1, < 6.4.41 | affected |
| symfony | routing | >= 7.0.0-BETA1, < 7.4.13 | affected |
| symfony | routing | >= 8.0.0-BETA1, < 8.0.13 | affected |
Weaknesses
- CWE-172: CWE-172: Encoding Error
- CWE-601: CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
References
- https://github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h
- https://github.com/symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d
- https://github.com/symfony/symfony/releases/tag/v5.4.53
- https://github.com/symfony/symfony/releases/tag/v6.4.41
- https://github.com/symfony/symfony/releases/tag/v7.4.13
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