Ghostwire

CVE-2026-48736: Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in...

MEDIUM CVSS 0.0 Exploit Available

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

Description

Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient

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-38cx-cq6f-5755
github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2
github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-client/CVE-
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026
symfony.com/cve-2026-48736
github.com/advisories/GHSA-38cx-cq6f-5755
www.tenable.com/cve/CVE-2026-48736
www.cnnvd.org.cn/home/globalSearch?keyword=CVE-2026-48736