CVE-2026-49987 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-49987HIGH

yamadashy repomix — Repomix: Command Injection (RCE) via `--remote-branch` Argument Injection

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   N   A   H   H   H    7.5   .0054   43.1     —

AFFECTED
  Product  Versions    Fixed
  repomix  < 1.14.1 –  —

TIMELINE
  Jun 2   Reserved by GitHub_M
  Jul 15  EXPLOIT PUBLISHED — CVE-2026-49987 (yamadashy repomix). Public exploit reference added.
  Jul 15  Published (CNA: GitHub_M)

CWE-88 · CNA: GitHub_M · CVSS v4.0 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 2, 2026	Reserved	Reserved by GitHub_M
July 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-49987 (yamadashy repomix). Public exploit reference added.
July 15, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
yamadashy	repomix	—	< 1.14.1	—

Weaknesses

CWE-88

References (3)

https://github.com/yamadashy/repomix/commit/92bfa3193b5233a0d21beff929444153c088de82 [Patch]
https://github.com/yamadashy/repomix/releases/tag/v1.14.1 [Release Notes]
https://github.com/yamadashy/repomix/security/advisories/GHSA-9mm9-rqhj-j5mx [Exploit, Vendor Advisory, Mitigation]

Authoritative record: CVE-2026-49987 at cve.org

Vendors: yamadashy

Weaknesses: CWE-88

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49987 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.