{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/sso-plugin-for-jira/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.1,"id":"CVE-2026-41103"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["SSO Plugin for Jira","Confluence"],"_cs_severities":["critical"],"_cs_tags":["privilege-escalation","authentication","cve-2026-41103"],"_cs_type":"advisory","_cs_vendors":["Microsoft","Atlassian"],"content_html":"\u003cp\u003eCVE-2026-41103 exposes a vulnerability in the Microsoft SSO Plugin for Jira and Confluence. The incorrect implementation of the authentication algorithm within the plugin allows an unauthorized attacker to elevate privileges over a network. This vulnerability allows remote attackers to gain unauthorized access and control within affected Jira and Confluence instances. This poses a significant risk to organizations relying on these platforms for critical operations and data management, potentially leading to data breaches, system compromise, and disruption of services.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable Jira or Confluence instance with the Microsoft SSO Plugin installed.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious network request exploiting the flawed authentication algorithm.\u003c/li\u003e\n\u003cli\u003eThe crafted request bypasses normal authentication checks due to the incorrect algorithm implementation.\u003c/li\u003e\n\u003cli\u003eThe attacker gains unauthorized access to the system with elevated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the elevated privileges to access sensitive data and configuration settings.\u003c/li\u003e\n\u003cli\u003eThe attacker modifies user permissions, granting themselves further control within the system.\u003c/li\u003e\n\u003cli\u003eThe attacker installs malicious plugins or scripts to maintain persistence and expand their control.\u003c/li\u003e\n\u003cli\u003eThe attacker exfiltrates sensitive data or disrupts services, achieving their objectives.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-41103 allows attackers to achieve privilege escalation, potentially leading to complete control over the affected Jira or Confluence instances. This can result in data breaches, unauthorized modifications, and disruption of critical business processes. The vulnerability affects organizations using the Microsoft SSO Plugin for Jira and Confluence, which are widely used in software development and collaboration environments. The impact can range from data theft to complete system compromise, depending on the attacker\u0026rsquo;s objectives and the sensitivity of the data stored within the affected systems.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patch provided by Microsoft to remediate CVE-2026-41103 in the Microsoft SSO Plugin for Jira \u0026amp; Confluence (reference: \u003ca href=\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103)\"\u003ehttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41103)\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect CVE-2026-41103 Exploitation Attempt via Malicious Network Request\u0026rdquo; to identify and block exploitation attempts.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for suspicious authentication patterns indicative of exploitation of the flawed authentication algorithm.\u003c/li\u003e\n\u003cli\u003eEnforce strong password policies and multi-factor authentication to mitigate the risk of unauthorized access.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T18:42:08Z","date_published":"2026-05-12T18:42:08Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-41103-sso-privesc/","summary":"CVE-2026-41103 describes an incorrect implementation of the authentication algorithm in Microsoft SSO Plugin for Jira \u0026 Confluence, allowing an unauthorized attacker to elevate privileges over a network.","title":"CVE-2026-41103: Microsoft SSO Plugin for Jira \u0026 Confluence Privilege Escalation","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-41103-sso-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — SSO Plugin for Jira","version":"https://jsonfeed.org/version/1.1"}