CVE-2026-47754Network attack vector

Unauthenticated file disclosure via path traversal

Published Aug 10, 2026 · Updated Aug 10, 2026

Path traversal in Metacat before 3.0.0 allows remote attackers to read files accessible to Tomcat through the legacy 1.x API. ArchiveHandler.readArchiveEntry() concatenates archiveEntryName into a filesystem path without validation, while its read-permission check is disabled. Access to the legacy API is sufficient; exploitation exposes credentials, private keys, research data, and other files readable by Tomcat.

CVSS severity9.3
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Metacat before 3.0.0 allows remote attackers to read files accessible to Tomcat through the legacy 1.x API. ArchiveHandler.readArchiveEntry() concatenates archiveEntryName into a filesystem path without validation, while its read-permission check is disabled. Access to the legacy API is sufficient; exploitation exposes credentials, private keys, research data, and other files readable by Tomcat.

The record

CVE
CVE-2026-47754
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
National Center for Ecological Analysis and Synthesis
Product
Metacat
Classifications
CWE-862, CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=< 3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

National Center for Ecological Analysis and Synthesis · Metacatversion=< 3.0.0

Published CVSS scores

9.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

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

CWE-862Missing Authorization
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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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