---
schema_version: '1.0'
id: security-20260705-a3fcde
url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-42926
url_hash: a3fcde12d42de556cee9788c67e3f146c7abcb9ec5e17d07c25a1280ebe5a29f
canonical_url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-42926
source: osv:debian
category: security/os
category_raw: cve/os
region: null
tags:
- cve
- DEBIAN-CVE-2026-42926
- severity: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
- nginx
- Debian
lang: en
published_at: '2026-05-13T16:16:49Z'
fetched_at: '2026-07-05T15:34:33Z'
updated_at: '2026-07-05T15:35:24Z'
status: published
content_hash: 3c8b35fa99a55119a4ab3edc9137d4fc6ef1fd5915dd3df8c074de4d6103e7f5
license_note: full
summary: '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 Supp'
summary_source: rss
summary_en: '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 Supp'
entities: []
key_facts: []
related: []
related_auto: []
title: DEBIAN-CVE-2026-42926 — nginx
---

# DEBIAN-CVE-2026-42926 — nginx

## TL;DR
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 Supp

## Key Points
- cve / DEBIAN-CVE-2026-42926 / severity: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 / nginx / Debian

## Details
**Severity:** 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
**Advisory:** DEBIAN-CVE-2026-42926

**Affected (your watchlist):**
- `Debian:nginx` 1.22.1-9+deb12u1 → no fixed version listed [proxmox]

**Details:**
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.

**References:**
- https://security-tracker.debian.org/tracker/CVE-2026-42926

_Data: OSV.dev (upstream: debian) — https://osv.dev/vulnerability/DEBIAN-CVE-2026-42926_

## Source
元記事: [DEBIAN-CVE-2026-42926 — nginx](https://osv.dev/vulnerability/DEBIAN-CVE-2026-42926) — published 2026-05-13T16:16:49Z