High severity7.1NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121560
CVE-2026-121560
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/controllers/post/updatePost.tsnvd
- github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/middlewares/postExists.tsnvd
- github.com/logchimp/logchimp/commit/a78b69af342908472ad400285187e43729295a7cnvd
- github.com/logchimp/logchimp/releases/tag/v0.9.3nvd
- www.vulncheck.com/advisories/logchimp-before-0.9.3-authorization-bypass-via-patch-api-v1-postsnvd
News mentions
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