Cyber Resilience

CVE-2026-41103

Critical

Published: 12 May 2026

Published
12 May 2026
Modified
16 May 2026
KEV Added
—
Patch
—
CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0538 91.7th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-41103 is a critical-severity Incorrect Implementation of Authentication Algorithm (CWE-303) vulnerability in Microsoft Confluence Saml Sso. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 8.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability details

Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unauthorized attacker to elevate privileges over a network.

CWE(s)
CWE-303NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Flawed authentication in public-facing SSO plugin for Jira/Confluence directly enables remote privilege escalation via T1190.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-23659Same vendor: Microsoft
CVE-2025-59237Same vendor: Microsoft
CVE-2025-55232Same vendor: Microsoft
CVE-2026-21532Same vendor: Microsoft
CVE-2025-53772Same vendor: Microsoft
CVE-2025-21368Same vendor: Microsoft
CVE-2026-21531Same vendor: Microsoft
CVE-2025-49712Same vendor: Microsoft
CVE-2026-32191Same vendor: Microsoft
CVE-2025-24043Same vendor: Microsoft

Affected Assets

microsoft
confluence saml sso
≤ 7.4.0
microsoft
jira saml sso
≤ 1.3.3

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References