Vulnerability record · CVE-2026-56768 · published 25 June 2026

CVE-2026-56768: Missing authorization vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.71% · top 48.3% CWE-862 · Missing authorization Deferred

8.7CVSS 4.0 base score

0.71%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

5References

14 Jul 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-56768), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.