yamadashy repomix up to 1.14.0 Git Command gitCommand.ts --remote-branch injection

Summaryinfo

A vulnerability has been found in yamadashy repomix up to 1.14.0 and classified as critical. This issue affects some unknown processing of the file src/core/git/gitCommand.ts of the component Git Command. The manipulation of the argument --remote-branch leads to injection. This vulnerability is documented as CVE-2026-49987. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in yamadashy repomix up to 1.14.0. This issue affects an unknown part of the file src/core/git/gitCommand.ts of the component Git Command. The manipulation of the argument --remote-branch with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Repomix is a tool that packs repositories into AI-friendly files. Prior to 1.14.1, src/core/git/gitCommand.ts execGitShallowClone passes the --remote-branch value directly to git fetch and git checkout without validation or --end-of-options, allowing --upload-pack or other Git option injection that bypasses validateGitUrl() dangerous parameter checks and can execute commands through local or SSH-style transports. This issue is fixed in version 1.14.1.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-49987 since 06/02/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 1.14.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• yamadashy

Name

• repomix

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14.0

Website

• Product: https://github.com/yamadashy/repomix/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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