Security readout for executives and security teams
CVE-2022-26134 lets an unauthenticated attacker run code on vulnerable Atlassian Confluence Server or Data Center systems. Because Confluence often stores internal documentation and operational knowledge, compromise can expose sensitive data and provide a foothold into the wider network. Organizations running self-managed Confluence Server or Data Center are exposed if versions are before 7.4.17, 7.13.7, 7.14.3, 7.15.2, 7.16.4, 7.17.4, or 7.18.1. Treat this as an urgent remediation item. The vulnerability is unauthenticated remote code execution, is listed by CISA as known exploited, and affects collaboration infrastructure that commonly contains sensitive business and technical information. Mitigation focus: Upgrade affected Confluence Server and Data Center instances to Atlassian fixed versions or later supported releases.; Prioritize internet-facing Confluence systems before internal-only systems.; If immediate upgrade is impossible, follow Atlassian's advisory for temporary vendor guidance..
Michael Williams reviewed this cited source version on .
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Open ATT&CK lookupExecution behavior lookup
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.atlassian.com/browse/CONFSERVER-79016CVE reference · x_refsource_MISC
- https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.htmlCVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26134CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.