Vulnerability · Published Feb 25, 2026 · Assigned by GitHub_M
CVE-2026-27701LiveCodes vulnerable to JavaScript Injection via untrusted PR title in i18n-update-pull workflow
High 8.8
In plain English
A high-severity code injection in livecodes from live-codes. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
LiveCode is an open-source, client-side code playground. Prior to commit e151c64c2bd80d2d53ac1333f1df9429fe6a1a11, LiveCode's `i18n-update-pull` GitHub Actions workflow is vulnerable to JavaScript injection. The title of the Pull Request associated with the triggering issue comment is interpolated directly into a `actions/github-script` JavaScript block using a GitHub Actions template expression. An attacker who opens a PR with a crafted title can inject arbitrary JavaScript that executes with the privileges of the CI bot token (`CI_APP_ID` / `CI_APP_PRIVATE_KEY`), enabling exfiltration of repository secrets and unauthorized GitHub API operations. Commit e151c64c2bd80d2d53ac1333f1df9429fe6a1a11 fixes the issue.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| live-codes | livecodes | < e151c64c2bd80d2d53ac1333f1df9429fe6a1a11 |
Weakness: CWE-94 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N