Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
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
What happened
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.
CISA lists it as exploited, added 07 Nov 2023.
Does it affect you
Names Atlassian Confluence. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
confluence.atlassian.com - Follow the vendor advisory for the fixed release and any interim mitigation.
jira.atlassian.com - Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
cisa.gov
CISA’s notes for this entry:
Affected, as published to NVD
- confluence
- Atlassian Confluence: exactly 8.6.0
The record
- NVD status
- Analyzed
- Published
- 31 Oct 2023, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 9.8, Critical — computed here from the vector; NVD states 9.8.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness
- CWE-863 Incorrect Authorization (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 07 Nov 2023; federal remediation due 28 Nov 2023. CISA records known use in ransomware campaigns. CISA entry
- Vendor
- Atlassian · Confluence Data Center and Server (CISA)
References on the NVD record
- confluence.atlassian.com/pages/viewpage.action?pageId=1311473907Issue TrackingMitigationVendor Advisory
- jira.atlassian.com/browse/CONFSERVER-93142Issue TrackingMitigationVendor Advisory
- packetstormsecurity.com/files/176264/Atlassian-Confluence-Improper-Authorization-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22518US Government Resource
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.