# CVE-2026-74864

## Summary

- **CVE ID:** CVE-2026-74864
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (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
- **Published:** Sep 30, 2026
- **Last Modified:** Sep 30, 2026

## 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

- YunoHost-Apps — sogo_yhn (0)

## References

- [CNA](https://cert.pl/en/posts/2026/09/CVE-2026-74864)
- [CNA](https://forum.yunohost.org/t/sogo-critical-vulnerability-fixed-in-5-8-0-ynh9/42699)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.41%
- **EPSS Percentile:** 32.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-10-11._