CVE-2026-74864
Authentication Bypass in sogo_yhn
YunoHost-Apps sogo_yhn
CVSS
9.3CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.41%Chance of exploitation activity in the next 30 days, higher than 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 5.8.0~ynh9sogo_yhnCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- sogo_yhnaffected: all versions before 5.8.0~ynh9CVE List