CVE-2026-41103

Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability

At a glance

Severity: CRITICAL 9.1
EPSS: EPSS 5.38 % · percentile 93 (2026-10-27)
State: PUBLISHED
Published: 2026-05-12
Updated: 2026-08-10
Assigner: microsoft
NVD status: Analyzed

Description

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

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-303

European references

ENISA EUVD · EUVD-2026-29689
GCVE · GCVE-0-2026-41103

CERT-FR advisories

CERTFR-2026-AVI-0588 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:confluence_saml_sso:*:*:*:*:*:*:*:* < 7.4.0
cpe:2.3:a:microsoft:jira_saml_sso:*:*:*:*:*:*:*:* < 1.3.3

Affected products

Product	Versions
Microsoft · Microsoft Confluence SAML SSO plugin	affected 1.0.0 < 7.4.0
Microsoft · Microsoft JIRA SAML SSO plugin	affected 1.0.0 < 1.3.3

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD