CVE-2018-25332Public exploitNetwork attack vectorHinoki check available

Unauthenticated command execution via plugin path traversal

Published May 17, 2026 · Updated May 17, 2026

Remote code execution in GitBucket 4.23.1 allows remote attackers to execute arbitrary Windows commands through the Git LFS endpoint. A four-digit Blowfish key authorizes a crafted Git LFS write whose backslash traversal places an uploaded JAR in the plugins directory. No account is required, but the published chain depends on Windows path handling and the plugin loader executing the planted endpoint.

CVSS severity9.3
Critical
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Remote code execution in GitBucket 4.23.1 allows remote attackers to execute arbitrary Windows commands through the Git LFS endpoint. A four-digit Blowfish key authorizes a crafted Git LFS write whose backslash traversal places an uploaded JAR in the plugins directory. No account is required, but the published chain depends on Windows path handling and the plugin loader executing the planted endpoint.

The record

CVE
CVE-2018-25332
Published
May 17, 2026
Updated
May 17, 2026
Vendor
GitBucket
Product
GitBucket
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2026CVE publishedPublication date reported by the CVE source.
  2. May 17, 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=4.23.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitBucket · GitBucketversion=4.23.1

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

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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