CVE-2023-22518All versions of Confluence Data Center and Server are affected by this unexploited vulnerability.
Updated under an hour ago ()
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It affects Atlassian Confluence Data Center and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Nov 7, 2023; federal agencies had to remediate by Nov 28, 2023, and it is known to be used in ransomware. Treat that date as your deadline.
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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. Atlassian 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.
- CVSS
- 10.0 CRITICAL (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-863
- Known exploited
- Added to CISA KEV Nov 7, 2023; federal remediation due Nov 28, 2023; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 100.00% (percentile 100)
- Assigned by
- atlassian
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Atlassian Confluence Data Center atlassian:confluence_data_center (from the name) | before 1.0.0 not affected; from 1.0.0; from 7.19.16 not affected; from 8.3.4 not affected; from 8.4.4 not affected; from 8.5.3 not affected; from 8.6.1 not affected | CNA record |
Atlassian Confluence Server atlassian:confluence_server (from the name) | before 1.0.0 not affected; from 1.0.0; from 7.19.16 not affected; from 8.3.4 not affected; from 8.4.4 not affected; from 8.5.3 not affected; from 8.6.1 not affected | CNA record |
atlassian confluence_data_center atlassian:confluence_data_center | from 1.0 before 7.19.16; from 7.20.0 before 8.3.4; from 8.4.0 before 8.4.4; from 8.5.0 before 8.5.3; 8.6.0 | NVD |
atlassian confluence_server atlassian:confluence_server | from 1.0 before 7.19.16; from 7.20.0 before 8.3.4; from 8.4.0 before 8.4.4; from 8.5.0 before 8.5.3; 8.6.0 | NVD |
References
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1311473907issue-tracking, mitigation, vendor-advisory
- https://jira.atlassian.com/browse/CONFSERVER-93142issue-tracking, mitigation, vendor-advisory
- http://packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.htmlexploit, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22518us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.