---
schema_version: '1.0'
id: security-20260705-701779
url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-42934
url_hash: 7017790e5def53698777a1eeb82e4bd13c046088b8d85a46be88afa358b06567
canonical_url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-42934
source: osv:debian
category: security/os
category_raw: cve/os
region: null
tags:
- cve
- DEBIAN-CVE-2026-42934
- severity:CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/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: fbcdeb493a861f251eb3c631d73e7a1517529a4bb890479901631c13f8640231
license_note: full
summary: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module
  module. When charset, source_charset, and charset_map and proxy_pass with disabled
  buffering ("off") directives are configured, unauthenticated attackers can send
  requests that with conditions be
summary_source: rss
summary_en: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module
  module. When charset, source_charset, and charset_map and proxy_pass with disabled
  buffering ("off") directives are configured, unauthenticated attackers can send
  requests that with conditions be
entities: []
key_facts: []
related: []
related_auto: []
title: DEBIAN-CVE-2026-42934 — nginx
---

# DEBIAN-CVE-2026-42934 — nginx

## TL;DR
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions be

## Key Points
- cve / DEBIAN-CVE-2026-42934 / severity:CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/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:L/VI:N/VA:L/SC:N/SI:N/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-2026-42934

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

**Details:**
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.     Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

**References:**
- https://security-tracker.debian.org/tracker/CVE-2026-42934

_Data: OSV.dev (upstream: debian) — https://osv.dev/vulnerability/DEBIAN-CVE-2026-42934_

## Source
元記事: [DEBIAN-CVE-2026-42934 — nginx](https://osv.dev/vulnerability/DEBIAN-CVE-2026-42934) — published 2026-05-13T16:16:49Z