What’s Vulnerable › Vulnerabilities

CVE-2018-25332: GitBucket 4.23.1 Unauthenticated Remote Code Execution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-17 · updated 2026-06-17
• Weakness: CWE-306

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.

Affected products

• GitBucket: before 4.24.0 — fixed in 4.24.0

How to fix

Upgrade to a fixed version: GitBucket 4.24.0. Check the vendor advisory for mitigations.

References

• https://github.com/gitbucket/gitbucket
• https://security.szurek.pl/
• https://www.exploit-db.com/exploits/44668
• https://www.vulncheck.com/advisories/gitbucket-unauthenticated-remote-code-execution

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