CVE-2026-1699_CVE-2026-1699

10 / 10

CRITICAL

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

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.

Basic Information

ID CVE-2026-1699

Source eclipse

Published Jan 30, 2026 at 09:57

Affected Product

Vendor Eclipse Foundation

Product Eclipse Theia - Website

Affected Versions Eclipse Foundation Eclipse Theia - Website 0

CWE Classification

CWE-829

References

gitlab.eclipse.org /security/vulnerability-reports/-/issues/332

{
    "lastseen": "",
    "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.",
    "published": "2026-01-30T09:57:14.877Z",
    "modified": "2026-01-30T09:57:14.877Z",
    "type": "cve",
    "title": "CVE-2026-1699",
    "source": "eclipse",
    "references": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/332",
    "id": "CVE-2026-1699",
    "bulletinFamily": "",
    "cwe": [
        "CWE-829"
    ],
    "cvelist": null,
    "sourceData": "Eclipse Foundation Eclipse Theia - Website 0",
    "sourceHref": "",
    "cvss": {
        "score": 10,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Eclipse Theia - Website",
    "version": "0",
    "vendor": "Eclipse Foundation",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}