Authorization Bypass Through User-Controlled Key Affecting org.graylog2:graylog2-server package, versions [6.2.0,6.3.12)[7.0.0,7.0.7)[7.1.1,7.1.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published1 Sept 2026
- disclosed28 Aug 2026
- creditMichael Dickenson,sreelim
Introduced: 28 Aug 2026
NewCVE-2026-55867 (opens in a new tab)How to fix?
Upgrade org.graylog2:graylog2-server to version 6.3.12, 7.0.7, 7.1.2 or higher.
Overview
org.graylog2:graylog2-server is a log management platform.
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the token revocation endpoint, which deletes an access token by its identifier without verifying that the token belongs to the requesting user. A user with any authenticated account can delete another user's access tokens, disrupting token-dependent integrations, by supplying the target token identifier to the revocation endpoint. This requires an authenticated account and knowledge or a guess of the target token identifier.