CVE-2026-55867 - Graylog token revocation endpoint allows authenticated users to delete other users’ access tokens

CVE-2026-55867 - Graylog token revocation endpoint allows authenticated users to delete other users’ access tokens

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/29/2026 - 07:28
CVE ID :CVE-2026-55867
Published : Aug. 28, 2026, 11:17 p.m. | 5 hours, 13 minutes ago
Description :Graylog is a free and open log management platform. From 6.2.0 until 6.3.12, 7.0.7, and 7.1.2, the DELETE /users/{userId}/tokens/{idOrToken} endpoint implemented by UsersResource.revokeToken() in graylog2-server/src/main/java/org/graylog2/rest/resources/users/UsersResource.java checks USERS_TOKENREMOVE permission against the attacker-controlled userId path parameter before resolving the token selected by idOrToken. An authenticated user can provide an authorized userId while accessTokenService.loadById() or accessTokenService.load() resolves a token belonging to another user, including a service account or administrator, after which accessTokenService.destroy() deletes that token without checking AccessToken.getUserName(). The issue does not expose token contents, but unauthorized deletion causes integrity impact and can disrupt access-token-based integrations. This issue is fixed in versions 6.3.12, 7.0.7, and 7.1.2.
Severity: 5.3 | MEDIUM
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