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CVE-2021-26084 is a critical severity vulnerability with a CVSS score of 9.8. Exploits are available; patches have been released and should be applied urgently.
Very high probability of exploitation in the next 30 days
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an authenticated user, and in some instances an unauthenticated user, to execute arbitrary code on a Confluence Server or Data Center instance. The vulnerable endpoints can be accessed by a non-administrator user or unauthenticated user if ‘Allow people to sign up to create their account’ is enabled. To check whether this is enabled go to COG > User Management > User Signup Options. 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.
| Vendor | Product |
|---|---|
| Atlassian | Confluence Server |
| Atlassian |
Please cite this page when referencing data from Strobes VI. Proper attribution helps support our vulnerability intelligence research.
| Confluence Data Center |