Misinterpretation of Input Affecting @finos/git-proxy package, versions <1.19.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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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)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