Critical

go-git File Transport Argument Injection

IdentifiersCVE-2025-21613CWE-88· Improper Neutralization of…

CVE-2025-21613 is an argument-injection vulnerability in go-git prior to version 5.13.0. Attacker-controlled input in the repository URL field can be interpreted as additional command-line arguments when go-git uses the file transport protocol. That transport path shells out to Git binaries, permitting injected arguments to influence git-upload-pack flags.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An attacker can set arbitrary git-upload-pack flag values in the Git subprocess invoked by a vulnerable go-git client. The resulting impact depends on the flags accepted by the installed Git binary and the application context in which attacker-controlled repository URLs are processed.

Mitigation

If you can’t patch tonight, do this now.

Where upgrading cannot be performed immediately, prohibit or strictly validate untrusted repository URL values before passing them to go-git, specifically rejecting values that can introduce additional command-line arguments. Avoid use of the file transport protocol for attacker-controlled repository locations where operationally feasible.

Remediation

Patch, then assume compromise.

Upgrade go-git to version 5.13.0 or later. Users of the version 4 release line should migrate to the fixed 5.13.0 release line, as the vulnerability affects versions through 4.13.1.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Go ProjectGo-Gitapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

16 SOURCESView more in app

redhat accessNews

Jan 1, 2026

RHSA-2024:6122 - Security Advisory - Red Hat Customer Portal

An argument-injection vulnerability in go-git through its URL field. It is fixed in the OpenShift Container Platform 4.18.1 update.

redhat accessNews

Jan 1, 2026

RHSA-2025:11396 - Security Advisory - Red Hat Customer Portal

Argument-injection vulnerability in go-git through its URL field.

redhat accessNews

Jan 1, 2026

RHSA-2025:0654 - Security Advisory - Red Hat Customer Portal

An argument-injection vulnerability in go-git through its URL field.

redhat accessNews

Jan 1, 2026

RHSA-2025:1119 - Security Advisory - Red Hat Customer Portal

An argument-injection vulnerability in go-git through its URL field, fixed by the Red Hat OpenShift Container Platform 4.17.16 update.

+11 more in the timeline

What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity