Seahub < 13.0.23 - Authentication Bypass in ShareLinkZipTaskView GET Method | Advisories

Advisories

Seahub < 13.0.23 - Authentication Bypass in ShareLinkZipTaskView GET Method

severity: high
date: 6/25/2026
Affecting: Seahub < 13.0.23
CVE: CVE-2026-56768
CWE: CWE-862 Missing Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: Release Notes
GitHub Issue
Patch Commit (1)
Patch Commit (2)
Credit: George Chen
Description: Seahub before 13.0.23 does not enforce SHARE_LINK_LOGIN_REQUIRED on GET /api/v2.1/share-link-zip-task/, allowing unauthenticated users to bypass authentication. Attackers with a folder share-link token can call the GET endpoint to obtain a fileserver zip token and download entire shared directory trees.

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