Vulnerability · Published May 12, 2026 · Assigned by microsoft
CVE-2026-41103Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability
Critical 9.1
In plain English
A critical-severity security flaw in Microsoft Confluence SAML SSO plugin from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.4% (higher than 93% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)5.4%top 7.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Confluence SAML SSO plugin | 1.0.0 – before 7.4.0 |
| Microsoft | Microsoft JIRA SAML SSO plugin | 1.0.0 – before 1.3.3 |
Weakness: CWE-303 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability vendor-advisory, patch