CVE-2026-119644
Blossom through 1.17.1 Authorization Bypass via Picture Delete and Star Endpoints
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | blossom-editor |
| Product | blossom |
| Published | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
blossom-editor / Blossom
0 ≤ 1.17.1
References
github.com: https://github.com/blossom-editor/blossom/issues/214 github.com: https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureService.java#L222-L232 github.com: https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/picture/PictureController.java#L56-L109 hackmd.io: https://hackmd.io/@hieuPenguinnn/blossom-picture-idor-cross-user-delete github.com: https://github.com/blossom-editor/blossom vulncheck.com: https://www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-picture-delete-and-star-endpoints
Credits
hieuPenguinnn