What’s Vulnerable › Vulnerabilities
CVE-2026-1699
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-01-30 · updated 2026-06-17
- Weakness: CWE-829
Description
In the Eclipse Theia Website repository, the GitHub Actions workflow .github/workflows/preview.yml used pull_request_target trigger while checking out and executing untrusted pull request code. This allowed any GitHub user to execute arbitrary code in the repository's CI environment with access to repository secrets and a GITHUB_TOKEN with extensive write permissions (contents:write, packages:write, pages:write, actions:write). An attacker could exfiltrate secrets, publish malicious packages to the eclipse-theia organization, modify the official Theia website, and push malicious code to the repository.
Affected products
- eclipse Theia Website: before 2026-01-22 — fixed in 2026-01-22
How to fix
Upgrade to a fixed version: eclipse Theia Website 2026-01-22. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-1699 or the next vulnerability affects your stack