high
7.5
CWE
400 20 770
EPSS
0.043%
Advisory Published
Advisory Published
Updated

CVE-2025-21614: go-git clients vulnerable to DoS via maliciously crafted Git server replies

First published: Mon Jan 06 2025(Updated: )

### Impact A denial of service (DoS) vulnerability was discovered in go-git versions prior to `v5.13`. This vulnerability allows an attacker to perform denial of service attacks by providing specially crafted responses from a Git server which triggers resource exhaustion in `go-git` clients. This is a `go-git` implementation issue and does not affect the upstream `git` cli. ### Patches Users running versions of `go-git` from `v4` and above are recommended to upgrade to `v5.13` in order to mitigate this vulnerability. ### Workarounds In cases where a bump to the latest version of `go-git` is not possible, we recommend limiting its use to only trust-worthy Git servers. ## Credit Thanks to Ionut Lalu for responsibly disclosing this vulnerability to us.

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
go/github.com/go-git/go-git>=4.0.0<=4.13.1
go/github.com/go-git/go-git/v5<5.13.0
5.13.0
go/gopkg.in/src-d/go-git.v4>=4.0.0<=4.13.1
go-git<5.13.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2025-21614?

    CVE-2025-21614 is classified as a denial of service (DoS) vulnerability.

  • How do I fix CVE-2025-21614?

    To fix CVE-2025-21614, upgrade to version 5.13.0 or later of go-git.

  • Which versions of go-git are affected by CVE-2025-21614?

    CVE-2025-21614 affects go-git versions prior to v5.13 and specific versions between 4.0.0 and up to 4.13.1.

  • What type of attack does CVE-2025-21614 enable?

    CVE-2025-21614 allows an attacker to perform denial of service attacks through crafted Git server responses.

  • What should I do if I cannot upgrade to a fixed version for CVE-2025-21614?

    If you cannot upgrade, consider implementing network security measures to filter malicious Git responses.

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