---
schema_version: '1.0'
id: security-20260705-febd21
url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-27651
url_hash: febd218316b198bfebb6248a519afb5291dc990ef3be6d837db4c8afee0bf20e
canonical_url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-27651
source: osv:debian
category: security/os
category_raw: cve/os
region: null
tags:
- cve
- DEBIAN-CVE-2026-27651
- severity:CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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: '2026-03-24T15:16:32Z'
fetched_at: '2026-07-05T15:34:33Z'
updated_at: '2026-07-05T15:34:52Z'
status: published
content_hash: f373e45706783adcf58d4507fbafdc07818e23156d7c1a329c06ba55fc46e1ca
license_note: full
summary: When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX
  Open Source, undisclosed requests can cause worker processes to terminate. This
  issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the
  authentication server permits retry by retu
summary_source: rss
summary_en: When the ngx_mail_auth_http_module module is enabled on NGINX Plus or
  NGINX Open Source, undisclosed requests can cause worker processes to terminate.
  This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2)
  the authentication server permits retry by retu
entities: []
key_facts: []
related: []
related_auto: []
title: DEBIAN-CVE-2026-27651 — nginx
---

# DEBIAN-CVE-2026-27651 — nginx

## TL;DR
When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by retu

## Key Points
- cve / DEBIAN-CVE-2026-27651 / severity:CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:N/PR:N/UI:N/VC:N/VI:N/VA:H/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-2026-27651

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

**Details:**
When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

**References:**
- https://security-tracker.debian.org/tracker/CVE-2026-27651

_Data: OSV.dev (upstream: debian) — https://osv.dev/vulnerability/DEBIAN-CVE-2026-27651_

## Source
元記事: [DEBIAN-CVE-2026-27651 — nginx](https://osv.dev/vulnerability/DEBIAN-CVE-2026-27651) — published 2026-03-24T15:16:32Z