Medium severity5.4NVD Advisory· Published Oct 30, 2026
CVE-2026-119644
CVE-2026-119644
Description
Blossom through 1.17.1 contains an authorization bypass vulnerability that allows authenticated non-readonly users to modify other users' pictures by supplying arbitrary picture ids. Attackers can call the picture delete, /picture/del/batch, or /picture/star endpoints to permanently delete victims' images and stored files or change their star status.
Patches
Vulnerability mechanics
References
5- github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureController.javanvd
- github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureService.javanvd
- github.com/blossom-editor/blossom/issues/214nvd
- hackmd.io/@hieuPenguinnn/blossom-picture-idor-cross-user-deletenvd
- www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-picture-delete-and-star-endpointsnvd
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