---
id: CVE-2026-74864
title: "sogo_yhn configures SOGo with a parameter that forces the request with HTTP header \"x-webobjects-remote-user\" to be treated as sent by a verified user without performing password validation.\_Since Nginx does not strip this header, any cl…"
summary: "sogo_yhn configures SOGo with a parameter that forces the request with HTTP header \"x-webobjects-remote-user\" to be treated as sent by a verified user without performing password validation.\_Since Nginx does not strip this header, any cl…"
severity: critical
cvss: 9.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-639
vendor: YunoHost-Apps
product: sogo_yhn
affected:
  - sogo_yhn < 5.8.0~ynh9
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T13:17:19.913'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74864'
references:
  - url: 'https://cert.pl/en/posts/2026/09/CVE-2026-74864'
    label: cvd@cert.pl
  - url: >-
      https://forum.yunohost.org/t/sogo-critical-vulnerability-fixed-in-5-8-0-ynh9/42699
    label: cvd@cert.pl
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-30T12:50:42.911688Z'
cvssSource: cna
ingestedAt: '2026-09-30T13:03:51.964Z'
---

## Overview

sogo_yhn configures SOGo with a parameter that forces the request with HTTP header "x-webobjects-remote-user" to be treated as sent by a verified user without performing password validation. Since Nginx does not strip this header, any client can supply it arbitrarily and gain access as any user, including a privileged user, without providing a password.




This issue was fixed in version 5.8.0~ynh9.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.