HIGH 7.1 NVD
CVE-2026-121560
LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any other post by supplying
LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any other post by supplying mismatched postId and id body parameters. Attackers can set postId to their own post and id to an enumerated victim post UUID to overwrite its title, slug, content, boardId and roadmap_id.
References
- https://github.com/logchimp/logchimp
- https://github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/controllers/post/upda
- https://github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/middlewares/postExist
- https://github.com/logchimp/logchimp/commit/a78b69af342908472ad400285187e43729295a7c
- https://github.com/logchimp/logchimp/releases/tag/v0.9.3
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-11-03 via NVD.
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