HOMEVULNERABILITIESCVE-2022-26134
HIGHCISA KEVIN THE WILD

CVE-2022-26134

Published: June 2, 2022

EPSS:94.41%probability of exploitation in 30 daysPercentile:100.0th

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.

NVD Source

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.

Added to KEV: 2022-06-02Federal patch deadline: 2022-06-06⚠ USED IN RANSOMWARE CAMPAIGNS
Required Action (CISA)

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.

Recommended Action

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.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Atlassian
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (1)

Quick Facts

CVE IDCVE-2022-26134
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)94.41%
PublishedJun 2, 2022

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.