Description
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.
Severity (CVSS)
| Base score | 5.1 |
|---|---|
| Severity | Medium |
| Version | CVSS 4.0 |
| Vector | 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 |
| Provided by | CNA |
Weaknesses
- CWE-172 — CWE-172: Encoding Error
- CWE-601 — CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected products
| Vendor | Product | Versions |
|---|---|---|
| symfony | symfony | < 5.4.53; >= 6.0.0-BETA1, < 6.4.41; >= 7.0.0-BETA1, < 7.4.13; >= 8.0.0-BETA1, < 8.0.13 |
| symfony | routing | < 5.4.53; >= 6.0.0-BETA1, < 6.4.41; >= 7.0.0-BETA1, < 7.4.13; >= 8.0.0-BETA1, < 8.0.13 |
References
- https://github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h (x_refsource_CONFIRM)
- https://github.com/symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d (x_refsource_MISC)
- https://github.com/symfony/symfony/releases/tag/v5.4.53 (x_refsource_MISC)
- https://github.com/symfony/symfony/releases/tag/v6.4.41 (x_refsource_MISC)
- https://github.com/symfony/symfony/releases/tag/v7.4.13 (x_refsource_MISC)
Generated from the official CVE List on 15 Jul 2026 07:06 UTC.