CVE-2026-91144Network attack vectorHinoki check available

File disclosure via unchecked share download paths

Published Sep 14, 2026 · Updated Sep 14, 2026

Improper access control in ZFile 5.0.5 and earlier allows remote attackers with a share link to read files under its shared base directory. The download endpoint accepts attacker-supplied file-path query parameters without confirming that each requested path belongs to the share link's allowed entries. Possession of a valid share link is required, and exposure is limited to files reachable beneath that share's configured base directory.

CVSS severityUnavailable
Unscored
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper access control in ZFile 5.0.5 and earlier allows remote attackers with a share link to read files under its shared base directory. The download endpoint accepts attacker-supplied file-path query parameters without confirming that each requested path belongs to the share link's allowed entries. Possession of a valid share link is required, and exposure is limited to files reachable beneath that share's configured base directory.

The record

CVE
CVE-2026-91144
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
ZFile
Product
ZFile
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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 <=5.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ZFile · ZFileversion=0 <=5.0.5

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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

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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