CVE-2026-42926
NGINX ngx_http_proxy_v2_module vulnerability
MEDIUM 6.3
En bref
- Source
- NVD
- EPSS
- EPSS 0.35 % · centile 28 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- f5
- Statut NVD
- Analyzed
Description
When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Faiblesses (CWE)
- CWE-172 — Improper Encoding or Decoding of Data
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | f5 |
| CVSS 4.0 | MEDIUM 6.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N | f5 |
| CVSS 4.0 | MEDIUM 6.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/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 · f5sirt@f5.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | NVD · f5sirt@f5.com (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-30006
- GCVE · GCVE-0-2026-42926
Avis du CERT-FR
- CERTFR-2026-AVI-0591 — Multiples vulnérabilités dans les produits F5 · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*≥ 1.3.0 ≤ 1.6.2cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*≥ 1.29.4 ≤ 1.30.0cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*≥ 2.0.0 ≤ 2.6.0cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*≥ 2.16.0 ≤ 2.22.0cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 3.5.0 ≤ 3.7.2cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 4.0.0 ≤ 4.0.1cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 5.0.0 ≤ 5.4.2
Produits affectés
| Produit | Versions |
|---|---|
| F5 · NGINX Open Source | unaffected 1.31.0 < * ; affected 1.29.4 < 1.30.1 |
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 |