6.1

CVE-2026-48784

Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Sensiolabs ≫ Symfony Version < 5.4.53
Sensiolabs ≫ Symfony Version >= 6.0.0 < 6.4.41
Sensiolabs ≫ Symfony Version >= 7.0.0 < 7.4.13
Sensiolabs ≫ Symfony Version >= 8.0.0 < 8.0.13
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.184
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
security-advisories@github.com 5.1 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-172 Encoding Error

The product does not properly encode or decode the data, resulting in unexpected values.

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

https://github.com/symfony/symfony/releases/tag/v5.4.53
Product
Release Notes
https://github.com/symfony/symfony/releases/tag/v6.4.41
Product
Release Notes
https://github.com/symfony/symfony/releases/tag/v7.4.13
Product
Release Notes
https://github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h
Patch
Vendor Advisory
https://github.com/symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d
Patch