{ "document": { "acknowledgments": [ { "names": [ "Robert Fitzpatrick with Microsoft" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Critical" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2026-41103 Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103" }, { "category": "self", "summary": "CVE-2026-41103 Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-41103.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability", "tracking": { "current_release_date": "2026-05-12T07:00:00.000Z", "generator": { "date": "2026-06-09T19:32:20.161Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2026-41103", "initial_release_date": "2026-05-12T07:00:00.000Z", "revision_history": [ { "date": "2026-05-12T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<1.3.3", "product": { "name": "Microsoft JIRA SAML SSO plugin <1.3.3", "product_id": "2" } }, { "category": "product_version", "name": "1.3.3", "product": { "name": "Microsoft JIRA SAML SSO plugin 1.3.3", "product_id": "21245" } } ], "category": "product_name", "name": "Microsoft JIRA SAML SSO plugin" }, { "branches": [ { "category": "product_version_range", "name": "<7.4.0", "product": { "name": "Microsoft Confluence SAML SSO plugin <7.4.0", "product_id": "1" } }, { "category": "product_version", "name": "7.4.0", "product": { "name": "Microsoft Confluence SAML SSO plugin 7.4.0", "product_id": "21323" } } ], "category": "product_name", "name": "Microsoft Confluence SAML SSO plugin" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-41103", "cwe": { "id": "CWE-303", "name": "Incorrect Implementation of Authentication Algorithm" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "An attacker who successfully exploited this vulnerability could bypass authentication and gain unauthorized access to Jira or Confluence as a valid user. This may allow the attacker to view or modify content and perform actions with the same permissions as the compromised account, based on the authorization levels defined for that user within the Jira or Confluence server.", "title": "What privileges could be gained by an attacker who successfully exploited this vulnerability?" }, { "category": "faq", "text": "An attacker could exploit this vulnerability by sending a specially crafted SSO response during the login process that tricks the system into accepting a forged identity, allowing the attacker to sign in without authenticating the user through Microsoft Entra ID.", "title": "How could an attacker exploit the vulnerability?" }, { "category": "faq", "text": "This means that an attacker who successfully exploits the vulnerability could access sensitive information and modify data within Jira or Confluence based on the authorization defined for the user in those servers but availability is not impacted because the vulnerability only allows an attacker to bypass authentication and act as a legitimate user, without providing any capability to disrupt, degrade, or take down the Jira or Confluence service itself.", "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and integrity (I:H), but could lead to no loss of availability (A:N). What does that mean for this vulnerability?" } ], "product_status": { "fixed": [ "21245", "21323" ], "known_affected": [ "1", "2" ] }, "references": [ { "category": "self", "summary": "CVE-2026-41103 Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103" }, { "category": "self", "summary": "CVE-2026-41103 Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-41103.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "1.3.3:Security Update:https://learn.microsoft.com/en-us/entra/identity/saas-apps/jiramicrosoft-tutorial", "product_ids": [ "2" ], "url": "https://learn.microsoft.com/en-us/entra/identity/saas-apps/jiramicrosoft-tutorial" }, { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "1.3.3:Security Update (Atlassian Marketplace):https://marketplace.atlassian.com/apps/1224430/com.microsoft.MicrosoftSsoJiraPlugin/version-history", "product_ids": [ "2" ], "url": "https://marketplace.atlassian.com/apps/1224430/com.microsoft.MicrosoftSsoJiraPlugin/version-history" }, { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "7.4.0:Security Update:https://learn.microsoft.com/en-us/entra/identity/saas-apps/confluencemicrosoft-tutorial", "product_ids": [ "1" ], "url": "https://learn.microsoft.com/en-us/entra/identity/saas-apps/confluencemicrosoft-tutorial" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 7.9, "userInteraction": "NONE", "vectorString": "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", "version": "3.1" }, "products": [ "1", "2" ] } ], "threats": [ { "category": "impact", "details": "Elevation of Privilege" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely" } ], "title": "Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability" } ] }