CVE-2026-48736

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.0 to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, NoPrivateNetworkHttpClient and IpUtils::PRIVATE_SUBNETS omitted IPv6 transition prefixes such as 6to4, NAT64, Teredo, and IPv4-compatible IPv6, allowing attacker-supplied URLs to represent private IPv4 targets in forms that IpUtils::isPrivateIp() did not block. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

History

16 Jul 2026, 03:12

Type Values Removed Values Added
References () https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2 - () https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2 - Patch
References () https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e - () https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e - Patch
References () https://github.com/symfony/symfony/releases/tag/v5.4.53 - () https://github.com/symfony/symfony/releases/tag/v5.4.53 - Release Notes
References () https://github.com/symfony/symfony/releases/tag/v6.4.41 - () https://github.com/symfony/symfony/releases/tag/v6.4.41 - Release Notes
References () https://github.com/symfony/symfony/releases/tag/v7.4.13 - () https://github.com/symfony/symfony/releases/tag/v7.4.13 - Release Notes
References () https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755 - () https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755 - Patch, Vendor Advisory
First Time Sensiolabs symfony
Sensiolabs
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 8.6
CPE cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

14 Jul 2026, 20:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-07-14 20:17

Updated : 2026-07-16 03:12


NVD link : CVE-2026-48736

Mitre link : CVE-2026-48736

CVE.ORG link : CVE-2026-48736


JSON object : View

Products Affected

sensiolabs

  • symfony
CWE
CWE-184

Incomplete List of Disallowed Inputs

CWE-918

Server-Side Request Forgery (SSRF)