GHSA-w5pp-99ch-qj29

Suggest an improvement
Source
https://github.com/advisories/GHSA-w5pp-99ch-qj29
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-w5pp-99ch-qj29/GHSA-w5pp-99ch-qj29.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-w5pp-99ch-qj29
Downstream
Published
2026-05-29T19:43:27Z
Modified
2026-05-29T19:45:21.229484320Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
go-git: Malformed Git object data may cause panics or resource exhaustion
Details

Impact

Several denial-of-service issues were identified in go-git when parsing maliciously crafted Git repository data.

An attacker may craft a malicious .pack, .idx or loose objects that causes an application using an affected version of go-git to panic or consume excessive resources.

This can lead to denial of service in applications that use go-git to clone, fetch, open, or otherwise process untrusted repositories or Git object data.

Exploitation requires the ability to alter read-only files such as .pack or .idx from the local repository's .git/objects/pack/ directory. Alternatively, the user would need to be interacting with a malicious remote server, which is not recommended and exposes users to a broader class of security risks beyond this issue.

Patches

Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-git version.

Credits

go-git thanks @kodareef5, @AyushParkara and @N0zoM1z0 for reporting this in four separate reports. 🙇

Database specific 
{
    "nvd_published_at": null,
    "severity": "MODERATE",
    "github_reviewed_at": "2026-05-29T19:43:27Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-400"
    ]
}
References

Affected packages

Go / github.com/go-git/go-git/v5

Package

Name
github.com/go-git/go-git/v5
View open source insights on deps.dev
Purl
pkg:golang/github.com/go-git/go-git/v5

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.19.1

Database specific

last_known_affected_version_range 
"<= 5.19.0"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-w5pp-99ch-qj29/GHSA-w5pp-99ch-qj29.json"

Go / github.com/go-git/go-git/v6

Package

Name
github.com/go-git/go-git/v6
View open source insights on deps.dev
Purl
pkg:golang/github.com/go-git/go-git/v6

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.0-alpha.4

Database specific

last_known_affected_version_range 
"<= 6.0.0-alpha.3"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-w5pp-99ch-qj29/GHSA-w5pp-99ch-qj29.json"