Atlassian Confluence Data Center and Server
YES - ON THE CISA KEV LIST
CVE-2023-22518
Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
overdue since 2023-11-28
Atlassian: 14 entries (0.8% of all KEV entries are from this vendor); 1 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://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
References
Other KEV entries for this vendor: Atlassian
- CVE-2026-21589 - Multiple Products (2026-10-15)
- CVE-2021-26086 - Jira Server and Data Center (2024-11-12)
- CVE-2023-22527 - Confluence Data Center and Server (2024-01-24)
- CVE-2023-22515 - Confluence Data Center and Server (2023-10-05)
- CVE-2022-36804 - Bitbucket Server and Data Center (2022-09-30)
- CVE-2022-26138 - Confluence (2022-07-29)
- CVE-2022-26134 - Confluence Server/Data Center (2022-06-02)
- CVE-2021-26085 - Confluence Server (2022-03-28)
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