{"id":"CVE-2023-22518","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-22518","generatedAt":"2026-10-31T10:24:31.628Z","title":"Atlassian Confluence Data Center and Server Improper Authorization Vulnerability","description":"All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability. \n\nAtlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.","published":"2023-10-31T15:15:09.000Z","lastModified":"2026-06-17T05:35:37.000Z","status":"Analyzed","sourceIdentifier":"security@atlassian.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-863"],"affected":["atlassian/confluence data center","atlassian/confluence server"],"epss":{"score":0.99999,"percentile":0.99996,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2023-11-07","dueDate":"2023-11-28","knownRansomwareCampaignUse":"Known","notes":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.\nhttps://confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html;  https://nvd.nist.gov/vuln/detail/CVE-2023-22518"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 November 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@atlassian.com"},{"url":"https://confluence.atlassian.com/pages/viewpage.action?pageId=1311473907","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"source":"security@atlassian.com"},{"url":"https://jira.atlassian.com/browse/CONFSERVER-93142","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"source":"security@atlassian.com"},{"url":"http://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://confluence.atlassian.com/pages/viewpage.action?pageId=1311473907","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://jira.atlassian.com/browse/CONFSERVER-93142","tags":["Issue Tracking","Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22518","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-22518","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}