Vulnerability in Microsoft Confluence Saml Sso
CVE-2026-41103
Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unauthorized attacker to elevate privileges over a network.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.054 · newest: 0.008 · change: -0.046
Affected products
- Microsoft Confluence Saml Sso
- Microsoft Jira Saml Sso
- Microsoft Confluence Saml Sso Plugin — versions 1.0.0
- Microsoft Jira Saml Sso Plugin — versions 1.0.0
Weakness classification (CWE)
References
- Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-41103?
- CVE-2026-41103 is a critical-severity vulnerability in Microsoft Confluence Saml Sso, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 9.1/10. Published 2026-05-12.
- How severe is CVE-2026-41103?
- Critical severity. CVSS v3 base score is 9.1 out of 10.