Vulnerability in repomix (CVE-2026-49987)
Summary
Vulnerability in repomix (CVE-2026-49987). Successful exploitation can lead to full system takeover. Exploitable via execGitShallowClone. Mitigation: upgrade to 1.14.1 or later.
Original description
The description as published by the source.
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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-49987 has been found in repomix.
Attackers can target a specific entry point like execGitShallowClone over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: upgrade repomix to 1.14.1 or later.
If unsure, ask your IT team or search "repomix CVE-2026-49987" on the vendor's site.
CVE-2026-49987 (repomix) — CWE-88 / CVSS v3 8.8
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: execGitShallowClone / repomix / child_process.execFileAsync / dangerousParams
Patched: 1.14.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-88) exists in repomix. Attackers reach the vulnerable code path via execGitShallowClone without authentication.
Check the vendor advisory for the affected versions of repomix. Attack surface: execGitShallowClone / repomix / child_process.execFileAsync / dangerousParams.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to 1.14.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'repomix' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'repomix' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
repomixを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade repomix to 1.14.1ステージング環境で 1.14.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- web github.com
- web github.com