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
microsoft: confluence saml sso; microsoft: jira saml sso
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103 Vendor Advisory
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 5% percentile: 93 · as of 14 November 2026
- CWE
- CWE-303
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.