Known Exploited Vulnerability

CVE-2023-22515

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

Ransomware campaign 128 public exploits Added 05 Oct 2023 Due 13 Oct 2023 · 1029 days ago
VendorAtlassian
ProductConfluence Data Center and Server
WeaknessNot mapped
RansomwareKnown use

What the flaw is

Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

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. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.

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

128 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.

Showing 8 of 128. Full list in the trickest/cve dataset.

Vendor advisories

Primary sources

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Source: CISA KEV catalog · last verified August 6, 2026. Rebuilt automatically twice a day.