CVE-2026-48736
6.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| symfony | symfony | >= 5.4.0, < 5.4.53 | affected |
| symfony | symfony | >= 6.0.0-BETA1, < 6.4.41 | affected |
| symfony | symfony | >= 7.0.0-BETA1, < 7.4.13 | affected |
| symfony | symfony | >= 8.0.0-BETA1, < 8.0.13 | affected |
| symfony | http-client | >= 5.4.0, < 5.4.53 | affected |
| symfony | http-foundation | >= 6.0.0-BETA1, < 6.4.41 | affected |
| symfony | http-foundation | >= 7.0.0-BETA1, < 7.4.13 | affected |
| symfony | http-foundation | >= 8.0.0-BETA1, < 8.0.13 | affected |
Weaknesses
- CWE-184: CWE-184: Incomplete List of Disallowed Inputs
- CWE-918: CWE-918: Server-Side Request Forgery (SSRF)
References
- https://github.com/symfony/symfony/security/advisories/GHSA-38cx-cq6f-5755
- https://github.com/symfony/symfony/commit/82765368cf74177c36613575182f168a2eb765b2
- https://github.com/symfony/symfony/commit/85b831555be8ea1f43bf01078afe87bc4c92f65e
- https://github.com/symfony/symfony/releases/tag/v5.4.53
- https://github.com/symfony/symfony/releases/tag/v6.4.41
- https://github.com/symfony/symfony/releases/tag/v7.4.13
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