SB2026081039 - Information disclosure in Nextcloud Mail
Published: August 10, 2026
Security Bulletin ID
SB2026081039
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Exposure of Private Information ('Privacy Violation') (CVE-ID: CVE-2026-61545)
CWE-ID: CWE-359 - Exposure of Private Information ('Privacy Violation')
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability exists due to exposure of private personal information to an unauthorized actor. A remote user can bypass an administrator-configured user-enumeration restriction and gain unauthorized access to sensitive information on the system.
Remediation
Install update from vendor's website.