git-diff: OS command injection vulnerability via crafted strings to the gitDiff API
CVE-2026-110634 · GHSA-6wfj-92cw-88vg · published 14 Oct 2026
How serious is it
- Severity: critical, CVSS score 9.3 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-110634?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
git-diff(npm) < 2.0.7
How to check
- Run
npm ls git-diffin your project to see the installed version, including copies pulled in by other packages. - Or paste your lockfile into the checker: it lists every package with a known vulnerability, this one included.
- Or run
npx shippable-dev scan localhost:3000in your project folder. It reads your lockfile and flags this vulnerability along with every other known one.
How to fix
Copies a prompt for Claude Code, Cursor or Codex: it checks your lockfiles for this and upgrades it.
- Upgrade
git-diffto 2.0.7 or later, commit the lockfile and redeploy. - If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
git-diff before 2.0.7 contains an OS command injection vulnerability that allows attackers to execute shell commands by supplying crafted strings to the gitDiff API. Attackers who control a diffed document string can embed $(cmd) or backtick substitutions that shelljs.exec evaluates, running commands with Node.js process privileges.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- github.com/danday74/git-diff
- github.com/danday74/git-diff/blob/a85a649badc4c6bba991e87e82382b7d3cdd6634/js/gitDiffReal/generateDiff/index.js#L26-L30
- github.com/danday74/git-diff/commit/bfd727b6cf1daa671c3528d1d681f55b70e8fb19
- github.com/danday74/git-diff/pull/16
- www.vulncheck.com/advisories/git-diff-before-2.0.7-os-command-injection-via-gitdiff-input-strings
- nvd.nist.gov/vuln/detail/CVE-2026-110634
- github.com/advisories/GHSA-6wfj-92cw-88vg
Merged from NVD, GitHub Advisory Database, OSV. Last updated 28 Oct 2026. All vulnerabilities · RSS · JSON