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VULNERABILITIES

CVE-2026-48736 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2 [email protected]Patch
https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e [email protected]Patch
https://github.com/symfony/symfony/releases/tag/v5.4.53 [email protected]Release Notes
https://github.com/symfony/symfony/releases/tag/v6.4.41 [email protected]Release Notes
https://github.com/symfony/symfony/releases/tag/v7.4.13 [email protected]Release Notes

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-184Incomplete List of Disallowed Inputs[email protected]
CWE-918Server-Side Request Forgery (SSRF)[email protected]

Affected Products

ProductVersions
sensiolabs symfony
>= 5.4.0, < 5.4.43
>= 6.4.0, < 6.4.41
>= 7.0.0, < 7.4.13
>= 8.0.0, < 8.0.13

CPE

  • cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-48736
NVD Published Date:
Jul 14, 2026
NVD Last Modified:
Jul 16, 2026
Source:
[email protected]
CVE-2026-48736 Details - Not Deferred