CVE-2026-1699

CRITICAL

10.0

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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/30/2026

Last Modified3/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

eclipse:theia_website

Weaknesses (CWE)

CWE-829

References

https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/332(emo@eclipse.org)

IOC Correlations

No correlations recorded

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