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TI-2026-52584 Aliases CVE-2026-74865GHSA-jfr8-42vv-2p3v

Authentication Bypass in sogo_yhn

Priority MEDIUM 42CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

sogo_yhn configures SOGo with a parameter "SOGoTrustProxyAuthentication=YES". This causes the password to be bypassed during HTTP Basic authentication. An unauthenticated attacker who provides the username of an existing user and any arbitrary password can successfully log in to that user's account. This issue was fixed in version 5.8.0~ynh9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd percentileScored 2026-11-07
Fix Fixed sogo_yhn (YunoHost-Apps): 5.8.0~ynh9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YunoHost-Appssogo_yhnbefore 5.8.0~ynh95.8.0~ynh9Patch availableCNA
  • sogo_yhn VendorYunoHost-Apps Affected before 5.8.0~ynh9 Fixed in 5.8.0~ynh9 Patch available CNA

Remediation

  • Fix · CNA sogo_yhn (YunoHost-Apps) Fixed in 5.8.0~ynh9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    YunoHost-Apps sogo_yhn 5.8.0~ynh9

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-52583 Authentication Bypass in sogo_yhnPriority MEDIUM 48
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-74865
  2. 2026-10-03 Alias added: GHSA-jfr8-42vv-2p3v

References

Advisory 1

Other 1

  • TI-2026-52583 Authentication Bypass in sogo_yhn CVSS 4.0CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences