Vulnerability · Published Jun 25, 2026 · Assigned by VulnCheck

CVE-2026-56768Seahub < 13.0.23 - Authentication Bypass in ShareLinkZipTaskView GET Method

High 8.8

In plain English

A high-severity missing authorization in seahub from haiwen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 46.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
haiwen	seahub	0 – before 13.0.23

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Release Notes release-notes
GitHub Issue issue-tracking
Patch Commit (1) patch
Patch Commit (2) patch
https://www.vulncheck.com/advisories/seahub-authentication-bypass-in-sharelinkziptaskview-get-method third-party-advisory