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Prevent GitHub CLI and extensions from executing arbitrary commands from compromised GitHub Enterprise Server

CVSS 4.0 2.6 LOWEUVD CVSS 4.0 2.6 CVSS 4.0 · [email protected] · Secondary 2.6 LOWCVSS 3.1 · [email protected] · Primary 9.8 CRITICALPublisher rating MODERATEFixed by github.com/cli/go-gh/v2 2.12.1osv · severity unknownFixed by github.com/cli/go-gh/v2 2.12.1KEV status unknown

cve-program · CVE-2025-48938

Published

go-gh is a collection of Go modules to make authoring GitHub CLI extensions easier. A security vulnerability has been identified in versions prior to 2.12.1 where an attacker-controlled GitHub Enterprise Server could result in executing arbitrary commands on a user's machine by replacing HTTP URLs provided by GitHub with local file paths for browsing. In `2.12.1`, `Browser.Browse()` has been enhanced to allow and disallow a variety of scenarios to avoid opening or executing files on the filesystem without unduly impacting HTTP URLs. No known workarounds are available other than upgrading.

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euvd · EUVD-2025-16493

Published

go-gh is a collection of Go modules to make authoring GitHub CLI extensions easier. A security vulnerability has been identified in versions prior to 2.12.1 where an attacker-controlled GitHub Enterprise Server could result in executing arbitrary commands on a user's machine by replacing HTTP URLs provided by GitHub with local file paths for browsing. In `2.12.1`, `Browser.Browse()` has been enhanced to allow and disallow a variety of scenarios to avoid opening or executing files on the filesystem without unduly impacting HTTP URLs. No known workarounds are available other than upgrading.

Read the publisher's advisory

nvd · CVE-2025-48938

Published

go-gh is a collection of Go modules to make authoring GitHub CLI extensions easier. A security vulnerability has been identified in versions prior to 2.12.1 where an attacker-controlled GitHub Enterprise Server could result in executing arbitrary commands on a user's machine by replacing HTTP URLs provided by GitHub with local file paths for browsing. In `2.12.1`, `Browser.Browse()` has been enhanced to allow and disallow a variety of scenarios to avoid opening or executing files on the filesystem without unduly impacting HTTP URLs. No known workarounds are available other than upgrading.

Read the publisher's advisory

osv · GHSA-g9f5-x53j-h563

Published

### Summary A security vulnerability has been identified in `go-gh` where an attacker-controlled GitHub Enterprise Server could result in executing arbitrary commands on a user's machine by replacing HTTP URLs provided by GitHub with local file paths for browsing. ### Details The GitHub CLI and CLI extensions allow users to transition from their terminal for a variety of use cases through the [`Browser` capability in `github.com/cli/go-gh/v2/pkg/browser`](https://github.com/cli/go-gh/blob/61bf393cf4aeea6d00a6251390f5f67f5b67e727/pkg/browser/browser.go): - Using the `-w, --web` flag, GitHub CLI users can view GitHub repositories, issues, pull requests, and more using their web browser - Using the `gh codespace` command set, GitHub CLI users can transition to Visual Studio Code to work with GitHub Codespaces This is done by using URLs provided through API responses from authenticated GitHub hosts when users execute `gh` commands. Prior to `2.12.1`, `Browser.Browse()` would attempt to open the provided URL using a variety of OS-specific approaches regardless of the scheme. An attacker-controlled GitHub Enterprise Server could modify API responses to use a specially tailored local executable path instead of HTTP URLs to resources. This could allow the attacker to execute arbitrary executables on the user's machine. In `2.12.1`, `Browser.Browse()` has been enhanced to allow and disallow a variety of scenarios to avoid opening or executing files on the filesystem without unduly impacting HTTP URLs: 1. URLs with `http://`, `https://`, `vscode://`, `vscode-insiders://` protocols are supported 1. URLs with `file://` protocol are unsupported 1. URLs matching files or directories on the filesystem are unsupported 1. URLs matching executables in the user's path are unsupported URLs without protocols will be browsable if none of these other conditions apply. As we have more information about use cases, maintainers can expand these capabilities for an improved user experience that allows configuring allowed URL schemes and/or prompt the user for an unexpected user case and confirming whether to continue. ### Impact Successful exploitation could cause users of the attacker-controlled GitHub Enterprise Server to execute arbitrary commands. ### Remediation and Mitigation 1. Upgrade `go-gh` to `2.12.1`

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osv · GO-2025-3732

Published

GitHub CLI and extensions can execute arbitrary commands on compromised GitHub Enterprise Server in github.com/cli/go-gh

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2025-48938

Published

go-gh

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "cli",
                    "product": "go-gh",
                    "versions": [
                        {
                            "version": "< 2.12.1",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2025-16493

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 30, 2025, 6:45:59 PM

dateUpdated: May 30, 2025, 8:38:51 PM

2 related source bulletins · separate from aliases

openSUSE-SU-2025:15225-1: govulncheck-vulndb-0.0.20250612T141001-1.1 on GA media

CVE-2020-36846 · CVE-2022-31022 · CVE-2023-42818 · CVE-2025-0913 · CVE-2025-1792 · CVE-2025-22874 · CVE-2025-25207 · CVE-2025-25208 · CVE-2025-2571 · CVE-2025-29785 · CVE-2025-3230 · CVE-2025-3260 · CVE-2025-3454 · CVE-2025-3611 · CVE-2025-3913 · CVE-2025-4128 · CVE-2025-4573 · CVE-2025-4673 · CVE-2025-47950 · CVE-2025-48494 · CVE-2025-48495 · CVE-2025-48710 · CVE-2025-48865 · CVE-2025-48938 · CVE-2025-48948 · CVE-2025-48949 · CVE-2025-49011 · CVE-2025-49136 · CVE-2025-49140

msrc_CVE-2025-48938: Prevent GitHub CLI and extensions from executing arbitrary commands from compromised GitHub Enterprise Server

CVE-2025-48938

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2025-48938

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-501

Original publisher date fields

published: 2025-05-30T19:15:29.980

lastModified: 2026-08-17T12:05:03.540

1 source CPE criteria · context only
  • cpe:2.3:a:cli:go-gh:*:*:*:*:*:go:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-g9f5-x53j-h563

Published

github.com/cli/go-gh/v2

Go

SEMVER · introduced 0 → fixed 2.12.1

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GO-2025-3732

Published

github.com/cli/go-gh/v2

Go

SEMVER · introduced 0 → fixed 2.12.1

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 12:11 UTC · 256 of 275 readable · 252 fully read · documentation 469/469 current