CVE-2026-41103 Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability
An attacker can elevate privileges via a flawed authentication algorithm in the Microsoft SSO plugin for Jira and Confluence.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41103?
CVE-2026-41103 is a critical authentication bypass vulnerability in Microsoft Confluence SAML SSO plugin, published on 12 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unauthorized attacker to elevate privileges over a network.
Weakness: CWE-303
Which versions are affected by CVE-2026-41103?
It affects 2 products.
Products include Microsoft Confluence Saml Sso, Microsoft Jira Saml Sso.
How do I fix CVE-2026-41103?
No fix has been published for CVE-2026-41103 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-41103 being exploited?
There is no known exploitation of CVE-2026-41103 in the wild and no public exploit code.
Sources
Also known as GHSA-w9j2-m5wx-fqq4.