CVE-2026-56768

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/haiwen/seahub/commit/162cddae0831188d02bb8d451dc2193e197dcc57
https://github.com/haiwen/seahub/commit/b609949cf64ed6a15708d0fb5ea9c179962e23cc
https://github.com/haiwen/seahub/issues/9050
https://plus.seafile.com/wiki/publish/seafile-wiki/v5D5/
https://www.vulncheck.com/advisories/seahub-authentication-bypass-in-sharelinkziptaskview-get-method

Configurations

No configuration.

History

25 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Seahub anterior a la versión 13.0.23 no impone SHARE_LINK_LOGIN_REQUIRED en GET /api/v2.1/share-link-zip-task/, permitiendo a usuarios no autenticados eludir la autenticación. Atacantes con un token de enlace compartido de carpeta pueden llamar al endpoint GET para obtener un token zip del servidor de archivos y descargar árboles de directorios compartidos completos.

Information

Published : 2026-06-25 19:16

Updated : 2026-10-25 22:10

NVD link : CVE-2026-56768

Mitre link : CVE-2026-56768

CVE.ORG link : CVE-2026-56768

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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