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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| YunoHost-Apps | sogo_yhn | < 5.8.0~ynh9 | 5.8.0~ynh9 |
References
- https://cert.pl/en/posts/2026/09/CVE-2026-74864 third-party-advisory
- https://forum.yunohost.org/t/sogo-critical-vulnerability-fixed-in-5-8-0-ynh9/42699 issue-tracking