# CVE-2025-21614: GO-2025-3367 - Clients vulnerable to DoS via maliciously crafted Git server replies in github.com/go-git/go-git

Source: https://junglewise.ai/threats/cve-2025-21614-go-git-clients-vulnerable-to-dos-via-maliciously-crafted-git  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-01-07  
License: CC BY 4.0 with a link back

CVE-2025-21614 · Severity: low · CVSS 3.1 · Published 2025-01-07

Clients vulnerable to DoS via maliciously crafted Git server replies in github.com/go-git/go-git

Technologies: [github.com/go-git/go-git (Go)](https://junglewise.ai/threats/technologies/github-com-go-git-go-git), [github.com/go-git/go-git/v4 (Go)](https://junglewise.ai/threats/technologies/github-com-go-git-go-git-v4), [github.com/go-git/go-git/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-go-git-go-git-v5), [gopkg.in/src-d/go-git.v4 (Go)](https://junglewise.ai/threats/technologies/gopkg-in-src-d-go-git-v4). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-21614 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-21614 being exploited in the wild.

**How severe is CVE-2025-21614?** Low severity, with a CVSS score of 3.1, published 7 January 2025.

**Which products and versions are affected?** github.com/go-git/go-git (Go) SEMVER:introduced=4.0.0,last_affected=4.13.1; github.com/go-git/go-git/v4 (Go) SEMVER:introduced=4.0.0; github.com/go-git/go-git/v5 (Go) SEMVER:introduced=0,fixed=5.13.0; gopkg.in/src-d/go-git.v4 (Go) SEMVER:introduced=4.0.0, SEMVER:introduced=4.0.0,last_affected=4.13.1.

**Is there a fix for CVE-2025-21614?** Yes. github.com/go-git/go-git/v5 (Go): upgrade to 5.13.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-21614?** Check whether you run github.com/go-git/go-git (Go), github.com/go-git/go-git/v4 (Go), github.com/go-git/go-git/v5 (Go) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/go-git/go-git/v5 (Go): upgrade to 5.13.0 or later

  ```sh
  go get github.com/go-git/go-git/v5@v5.13.0
  ```


## Affected products

- github.com/go-git/go-git (Go) SEMVER:introduced=4.0.0,last_affected=4.13.1
- github.com/go-git/go-git/v4 (Go) SEMVER:introduced=4.0.0
- github.com/go-git/go-git/v5 (Go) SEMVER:introduced=0,fixed=5.13.0
- gopkg.in/src-d/go-git.v4 (Go) SEMVER:introduced=4.0.0, SEMVER:introduced=4.0.0,last_affected=4.13.1

## Identifiers

- CVE-2025-21614
- GHSA-r9px-m959-cxf4
- GO-2025-3367

## Related threats

- [go-git path traversal via malicious reference names](https://junglewise.ai/threats/cve-2026-71557-go-git-path-traversal-via-malicious-reference-names)
- [go-git symlink traversal in worktree operations](https://junglewise.ai/threats/cve-2026-71556-go-git-symlink-traversal-in-worktree-operations)
- [GO-2026-5693 - Go-git: Malformed Git object data may cause panics or resource exhaustion in github.com/go-git/go-git](https://junglewise.ai/threats/go-2026-5693-go-git-malformed-git-object-data-may-cause-panics-or-9c82fa09)
- [go-git DoS via malformed Git object data](https://junglewise.ai/threats/go-git-dos-via-malformed-git-object-data-a3075e9b)
- [go-git path traversal via crafted repository data](https://junglewise.ai/threats/cve-2026-45571-go-git-path-traversal-via-crafted-repository-data)