SB2026051321 - Privilege escalation in Microsoft SSO Plugin for Jira & Confluence
Published: May 13, 2026
Security Bulletin ID
SB2026051321
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect Implementation of Authentication Algorithm (CVE-ID: CVE-2026-41103)
CWE-ID: CWE-303 - Incorrect Implementation of Authentication Algorithm
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence. A remote attacker can gain elevated privileges on the target system.
Remediation
Install update from vendor's website.