GitBucket 4.23.1 contains an unauthenticated remote code execution vulnerability that allows attackers to execute arbitrary commands by exploiting weak secret token generation and insecure file upload functionality. Attackers can brute-force the Blowfish encryption key, upload a malicious JAR plugin via the git-lfs endpoint, and execute system commands through an exposed exploit endpoint.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
gitbucket GitBucket affected
Version Status Constraints
4.23.1 affected —

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Project Subscriptions

Vendors Products
Jenkins Subscribe
Gitbucket Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/gitbucket/gitbucket cve-icon cve-icon
https://security.szurek.pl/ cve-icon cve-icon
https://www.exploit-db.com/exploits/44668 cve-icon cve-icon
https://www.vulncheck.com/advisories/gitbucket-unauthenticated-remote-code-execution cve-icon cve-icon
History

Sun, 17 May 2026 12:30:00 +0000

Type Values Removed Values Added
Description GitBucket 4.23.1 contains an unauthenticated remote code execution vulnerability that allows attackers to execute arbitrary commands by exploiting weak secret token generation and insecure file upload functionality. Attackers can brute-force the Blowfish encryption key, upload a malicious JAR plugin via the git-lfs endpoint, and execute system commands through an exposed exploit endpoint.
Title GitBucket 4.23.1 Unauthenticated Remote Code Execution
First Time appeared Jenkins
Jenkins gitbucket
Weaknesses CWE-306
CPEs cpe:2.3:a:jenkins:gitbucket:4.23.1:*:*:*:*:*:*:*
Vendors & Products Jenkins
Jenkins gitbucket
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-17T12:11:36.911Z

Reserved: 2026-05-17T11:48:33.456Z

Link: CVE-2018-25332

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-17T13:16:44.840

Modified: 2026-05-17T13:16:44.840

Link: CVE-2018-25332

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-17T13:30:02Z

Weaknesses