Unrated severityCISA KEVNVD Advisory· Published Aug 30, 2021· Updated Dec 16, 2025
CVE-2021-26084
CVE-2021-26084
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 before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.
AI Insight
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Affected products
3>=6.14.0 <7.4.11, >=7.5.0 <7.11.6, >=7.12.0 <7.12.5; <6.13.23+ 1 more
- (no CPE)range: >=6.14.0 <7.4.11, >=7.5.0 <7.11.6, >=7.12.0 <7.12.5; <6.13.23
- (no CPE)range: unspecified
- Range: unspecified
Patches
Vulnerability mechanics
References
2- packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.htmlmitrex_refsource_MISC
- jira.atlassian.com/browse/CONFSERVER-67940mitrex_refsource_MISC
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