---
schema_version: '1.0'
id: security-20260705-987a34
url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-1642
url_hash: 987a34885d6ae865529953d2d84440c1dbef9efc6964283eaa5cb86790e92b78
canonical_url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-1642
source: osv:debian
category: security/os
category_raw: cve/os
region: null
tags:
- cve
- DEBIAN-CVE-2026-1642
- severity:CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/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: '2026-02-04T15:16:14Z'
fetched_at: '2026-07-05T15:34:33Z'
updated_at: '2026-07-05T15:34:52Z'
status: published
content_hash: 03fe6fd8146bf7e9112c60afce251ef9614422d4af43f3af671ecde5cf6a7b98
license_note: full
summary: A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy
  to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle
  (MITM) position on the upstream server side—along with conditions beyond the attacker's
  control—may be able to inje
summary_source: rss
summary_en: A vulnerability exists in NGINX OSS and NGINX Plus when configured to
  proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle
  (MITM) position on the upstream server side—along with conditions beyond the attacker's
  control—may be able to inje
entities: []
key_facts: []
related: []
related_auto: []
title: DEBIAN-CVE-2026-1642 — nginx
---

# DEBIAN-CVE-2026-1642 — nginx

## TL;DR
A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker's control—may be able to inje

## Key Points
- cve / DEBIAN-CVE-2026-1642 / severity:CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/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:N/VI:H/VA:N/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-2026-1642

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

**Details:**
A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker's control—may be able to inject plain text data into the response from an upstream proxied server.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

**References:**
- https://security-tracker.debian.org/tracker/CVE-2026-1642

_Data: OSV.dev (upstream: debian) — https://osv.dev/vulnerability/DEBIAN-CVE-2026-1642_

## Source
元記事: [DEBIAN-CVE-2026-1642 — nginx](https://osv.dev/vulnerability/DEBIAN-CVE-2026-1642) — published 2026-02-04T15:16:14Z