CVE-2026-56768Network attack vector

Directory-tree disclosure via omitted login enforcement

Published Jun 25, 2026 · Updated Jun 25, 2026

Authentication bypass in Seafile Ltd. Seahub before 13.0.23 allows remote attackers with a folder share-link token to download shared trees. ShareLinkZipTaskView.get obtains a fileserver ZIP token without testing SHARE_LINK_LOGIN_REQUIRED and the request user's authentication state. Exploitation requires a valid folder share-link token and exposes the directory tree reachable through that link, rather than unrelated repositories.

CVSS severity8.7
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Seafile Ltd. Seahub before 13.0.23 allows remote attackers with a folder share-link token to download shared trees. ShareLinkZipTaskView.get obtains a fileserver ZIP token without testing SHARE_LINK_LOGIN_REQUIRED and the request user's authentication state. Exploitation requires a valid folder share-link token and exposes the directory tree reachable through that link, rather than unrelated repositories.

The record

CVE
CVE-2026-56768
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
Seafile Ltd.
Product
Seahub
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <13.0.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Seafile Ltd. · Seahubversion=0 <13.0.23

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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