Home/CVE/Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unautho
CVE

CVE-2026-41103

Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unautho

Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira &amp.

Confluence allows an unauthorized attacker to elevate privileges over a network.

CRITICAL · CVSS 9.1 EPSS 0.00171
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-303Incorrect Implementation of Authentication Algorithm
▤

Affected Products & Versions

2
microsoft confluence saml sso< 7.4.0
microsoft jira saml sso< 1.3.3
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 May 2026 · 06:17 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2026-41103Elevation of Privilege
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