Misinterpretation of Input Affecting @finos/git-proxy package, versions <1.19.2
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-JS-FINOSGITPROXY-11344799
- published31 Jul 2025
- disclosed30 Jul 2025
- creditUnknown
Introduced: 30 Jul 2025
NewCVE-2025-54584 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade @finos/git-proxy to version 1.19.2 or higher.
Overview
@finos/git-proxy is a Deploy custom push protections and policies on top of Git.
Affected versions of this package are vulnerable to Misinterpretation of Input via the parsePush.ts file. An attacker can bypass approval mechanisms or hide commits by crafting a malicious Git packfile that embeds a misleading PACK signature within commit content and manipulates the packet structure to deceive the parser.
PoC
- Create a commit on any branch containing the string "PACK".
- Use
git pack-objectsor a low-level library/custom script and add the string "PACK" after the real packfile's PACK header in the binary stream to generate a custom packfile with both branches. - Push using a custom client/raw protocol injection