Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

CVE-2026-49987Repomix: Command Injection (RCE) via `--remote-branch` Argument Injection

High 7.5

In plain English

A high-severity argument injection in repomix from yamadashy. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.5High

Exploit odds (30 days)0.7%top 46.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	repomix	1.14.1	GHSA-9mm9-rqhj-j5mx

Affected products (as reported)

Vendor	Product	Versions
yamadashy	repomix	< 1.14.1

Weakness: CWE-88 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/yamadashy/repomix/security/advisories/GHSA-9mm9-rqhj-j5mx x_refsource_CONFIRM
https://github.com/yamadashy/repomix/commit/92bfa3193b5233a0d21beff929444153c088de82 x_refsource_MISC
https://github.com/yamadashy/repomix/releases/tag/v1.14.1 x_refsource_MISC