CVE-2022-26134
Published: June 2, 2022
Official Description
Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.
CISA KEV Advisory
Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability
Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.
Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.
Risk Analysis
This vulnerability in Atlassian Confluence Server and Data Center allows an attacker to execute arbitrary code on the system without needing to authenticate. The high EPSS score indicates a very high likelihood of exploitation, and its inclusion in CISA's KEV confirms it is actively being exploited, making it an urgent threat.
Active exploitation of this vulnerability has been observed in the wild, indicating that working exploits are readily available and being used by attackers. This flaw is remotely exploitable.
Administrators should apply the latest security updates for Atlassian Confluence Server and Data Center immediately. Ensure all instances are patched to mitigate this critical remote code execution vulnerability.
Technical Analysis
CVE-2022-26134 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2022-26134 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-26134 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1