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CVE

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.
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CVE

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.

In the Eclipse Theia Website repository, the GitHub Actions workflow .github/workflows/preview.yml used pullrequesttarget 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1699.json, https://nvd.nist.gov/vuln/detail/CVE-2026-1699, https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/332, https://github.com/eclipse-theia/theia-website

Severity

10

CVSS Score
0
10

Basic Information

Base CVSS
10
EPSS Probability
0.00552%
EPSS Percentile
0.46168%
Introduced Version
0
Fix Available
2fb0cc4bfc372cfaef79feb4eebb6563778b2560

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