CVE-2026-119659

MediumCVSS 5.4

Published: 30/10/2026(UTC)Updated: 30/10/2026(UTC)Translated: 30/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.26%

18th percentile - higher than 18% of all known CVEs

Summary

Blossom through 1.17.1 contains an authorization bypass vulnerability that allows authenticated users to access other users' folders because FolderService queries filter only on folder id. An attacker can supply another user's folder id to /folder/info, /folder/upd, /folder/open or /folder/del to read storage paths, rename, toggle visibility, or delete folders.

Risk Assessment

An attacker can read, modify, and delete folders owned by other users, breaching confidentiality and integrity. Only an authenticated account is required.

Recommendation

Upgrade Blossom to a version later than 1.17.1. Ensure folder operations verify folder ownership rather than only the folder id.

Other vulnerabilities in Blossom

CVE-2026-119644Medium
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.

Original NVD description (English source)

Blossom through 1.17.1 contains an authorization bypass vulnerability that allows authenticated users to access other users' folders because FolderService queries filter only on folder id. Attackers can supply another user's folder id to /folder/info, /folder/upd, /folder/open or /folder/del to read storage paths, rename, toggle visibility, or delete folders.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS