CVE WatchSep 30, 2026

CVE-2026-74864

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 ver

CVSS

—

No CVSS

EPSS

0.4%

p35

KEV

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Exploit Today

0-100

Published: Sep 30, 2026 · Last modified: Sep 30, 2026 · CWE-639

EPSS · 30d

0.4%EPSS · 30 days0.6%

2026-10-012026-10-25

Technical 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.

Official references

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