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CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

criticalknown exploitedpublic exploitCVE-2023-22515
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Atlassianproduct: Confluence Data Center and ServerAuthentication bypass
What
A broken access control vulnerability allows an attacker to create unauthorized administrator accounts.
Who is affected
Deployments of Atlassian Confluence Data Center and Server.
Urgency
Remediation is critical due to active exploitation and the severity of the vulnerability.
Action
Implement the recommended security updates from Atlassian.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-10-05
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-22515

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-22515coverage & exploitation statusNVD · CVE.org

Recent advisories for Atlassian Confluence Data

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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