Ghostwire

CVE-2026-48784: Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route...

MEDIUM CVSS 0.0 Exploit Available

Published: June 15, 2026 | Last Modified: June 15, 2026

Description

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

Ghostwire Analysis — What This Means Practically

Exploit code is reported to be available, increasing the likelihood of active exploitation.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

References

github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h
github.com/symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/routing/CVE-2026
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026
symfony.com/cve-2026-48784
github.com/advisories/GHSA-h5x3-xfc9-m39h
www.tenable.com/cve/CVE-2026-48784
www.cnnvd.org.cn/home/globalSearch?keyword=CVE-2026-48784