CVE-2023-22518

What the flaw is

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.

Description as published by CISA. We have not independently reproduced it.

What CISA requires

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.

Public exploit code

58 public repositories referencing this CVE have been catalogued on GitHub. That volume usually means a reliable, widely-reproduced exploit. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.

• 0day404/HV-2024-POC
• 0x00sector/CVE_2023_22518_Checker
• 0x0d3ad/CVE-2023-22518
• 0xAj-Krishna/biggest-hack
• 0xAj-Krishna/biggest-hack-2023-24
• 12442RF/POC
• 1cYinfinity/One-liner-command
• AboSteam/POPC

Showing 8 of 58. Full list in the trickest/cve dataset.

Vendor advisories

• confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulner
• nvd.nist.gov/vuln/detail/CVE-2023-22518

Primary sources

• NVD entry — CVSS score, CPE list and references
• CISA KEV catalog — the source for this page
• CVE Record at cve.org