CVE-2026-48736
Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient
MEDIUM 6.9
En bref
- Source
- NVD
- EPSS
- EPSS 0.57 % · centile 47 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Analyzed
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.
Faiblesses (CWE)
- CWE-184 — Liste d'entrées interdites incomplète
- CWE-918 — Falsification de requête côté serveur (SSRF)
Références
- 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
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 4.0 | MEDIUM 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 | GitHub_M |
| CVSS 4.0 | MEDIUM 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Avis
- GHSA-38cx-cq6f-5755 — Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient
Références européennes
- ENISA EUVD · EUVD-2026-44372
- GCVE · GCVE-0-2026-48736
Avis du CERT-FR
- CERTFR-2026-AVI-0653 — Multiples vulnérabilités dans Symfony · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*≥ 5.4.0 < 5.4.43cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*≥ 6.4.0 < 6.4.41cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*≥ 7.0.0 < 7.4.13cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.0.13
Produits affectés
| Produit | Versions |
|---|---|
| symfony · symfony | affected >= 5.4.0, < 5.4.53 ; affected >= 6.0.0-BETA1, < 6.4.41 ; affected >= 7.0.0-BETA1, < 7.4.13 ; affected >= 8.0.0-BETA1, < 8.0.13 |
| symfony · http-client | affected >= 5.4.0, < 5.4.53 |
| symfony · http-foundation | affected >= 6.0.0-BETA1, < 6.4.41 ; affected >= 7.0.0-BETA1, < 7.4.13 ; affected >= 8.0.0-BETA1, < 8.0.13 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |