CVE-2022-26134
CVE-2022-26134 is a critical-severity vulnerability in Atlassian Confluence Data Center with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-06-02). The underlying weakness is classified as CWE-917.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 100% (100th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2022-06-02)
- EU (EUVD) id: EUVD-2022-30701
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-06-02)
- Weakness: CWE-917
- Affected product: Atlassian Confluence Data Center
- Published:
- Last modified:
Description
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.
Frequently asked questions
- What is CVE-2022-26134?
- In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.
- How severe is CVE-2022-26134?
- CVE-2022-26134 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-26134 being actively exploited?
- Yes. CVE-2022-26134 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-02, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2022-26134?
- CVE-2022-26134 primarily affects Atlassian Confluence Data Center. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-26134?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2022-26134 have an EU (EUVD) identifier?
- Yes. CVE-2022-26134 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-30701. It is also flagged as exploited in the EUVD (since 2022-06-02).
- When was CVE-2022-26134 published?
- CVE-2022-26134 was published on 2022-06-03 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html
- https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html
- https://jira.atlassian.com/browse/CONFSERVER-79016
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26134
Affected products (4)
- cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:confluence_data_center:7.18.0:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:confluence_server:7.18.0:*:*:*:*:*:*:*
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