OCTOBER 6, 2026
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Case File

CVE-2026-74864

CRITICAL · CVSS 9.3 EPSS 0.41%

Source: NVD + CISA KEV + EPSS · Published 2026-09-30 · Last synced 2026-10-06

CyberRota Analysis

AI-Generated

Nginx is vulnerable due to a misconfiguration in the SOGo application that allows the HTTP header "x-webobjects-remote-user" to be treated as a verified user without proper password validation. This flaw enables unauthorized clients to gain access as any user, including those with elevated privileges, posing a significant security risk. Organizations using Nginx with SOGo should prioritize upgrading to version 5.8.0~ynh9 to mitigate this critical vulnerability.

CVE
CVE-2026-74864
Severity
CRITICAL
CVSS
9.3
EPSS
0.41%
Nginx

Original NVD Description

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.