CVE-2021-26084

high-risk
Published 2021-08-30

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.

Do I need to act?

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94.4% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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1 public exploit available
50243
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Atlassian

References (5)

Exploit http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-...
Issue Tracking https://jira.atlassian.com/browse/CONFSERVER-67940
Exploit http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-...
Issue Tracking https://jira.atlassian.com/browse/CONFSERVER-67940
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
66
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 7/34 · Low