# 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.

- **Severity:** High 8.8 (`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`)
- **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 available:** No
- **Published:** 25 Feb 2026
- **Updated:** 27 Feb 2026
- **Also known as:** GHSA-xh9w-5859-x97j

## 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 (Improper Control of Generation of Code)

## 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.

## 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:

- Authorized security-research reproduction of CVE-2026-27701 / GHSA-xh9w-5859-x97j (live-codes/livecodes @ 8017e01): untrusted PR title interpolated into i18n-update-pull github-script block. (github_poc): https://github.com/pvharmo2/gha-lab-25b7988758

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27701 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27701 exists.

Affected product: live-codes livecodes. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-27701/ (Markdown: https://insights.sbomify.com/CVE-2026-27701/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27701
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27701
- OSV: https://osv.dev/vulnerability/CVE-2026-27701

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-27701/
Summaries are generated and may contain mistakes; the official description above is the record.