CVE-2026-56768

Seahub < 13.0.23 - Authentication Bypass in ShareLinkZipTaskView GET Method

CVSS 8.7 HIGHEPSS 0.4%CWE-862

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

25 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

haiwen · seahub

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References

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