CVE-2026-27701 LiveCodes vulnerable to JavaScript Injection via untrusted PR title in i18n-update-pull workflow
Attackers can inject JavaScript via PR titles in LiveCodes CI workflows, executing code with bot privileges to steal secrets and modify repositories.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27701?
CVE-2026-27701 is a high-severity code injection vulnerability in live-codes livecodes, published on 25 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-94
Which versions are affected by CVE-2026-27701?
How do I fix CVE-2026-27701?
No fix has been published for CVE-2026-27701 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-27701 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27701 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-xh9w-5859-x97j.