CVE-2026-119644
Blossom through 1.17.1 Authorization Bypass via Picture Delete and Star Endpoints
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Oct 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
Blossomblossom-editor |
|
References
- https://github.com/blossom-editor/blossom/issues/214issue-tracking
- https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureService.java#L222-L232technical-description
- https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureController.java#L56-L109technical-description
- https://hackmd.io/@hieuPenguinnn/blossom-picture-idor-cross-user-deletethird-party-advisory
- https://github.com/blossom-editor/blossomproduct
- VulnCheck Advisory: Blossom through 1.17.1 Authorization Bypass via Picture Delete and Star Endpointsthird-party-advisory
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