Vulnerability Intelligence Report
CVE-2026-1699
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.
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:0.50%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
—
Weaknesses (CWE)
CWE-829 ↗CWE-829 Inclusion of Functionality from Untrusted Control Sphere
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Eclipse Foundation | Eclipse Theia - Website | 0 < 2fb0cc4bfc372cfaef79feb4eebb6563778b2560 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.504%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Eclipse Foundation · Vendor · Belgium |
| Reserved | 2026-01-30T09:38:43 |
| Published | 2026-01-30T09:57:14 |
| Last Updated | 2026-02-02T19:26:31 |
Community Chatter & Buzz