← Vulnerability feed

Vulnerability record · CVE-2026-1699 · published 30 January 2026

CVE-2026-1699: Eclipse theia website inclusion from untrusted sphere vulnerability

Eclipse · Theia Website

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.

8.8 CVSS 3.1 High EPSS 0.52% · top 57.9% CWE-829 · Inclusion from untrusted sphere
8.8CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/332 ExploitIssue TrackingVendor Advisory

Track CVE-2026-1699 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-0770Langflow validate endpoint exec_globals remote code executionLangflow mishandles the exec_globals parameter passed to its validate endpoint, allowing functionality from an untrusted control sphere to be include…KEVEPSS 64%analysed7.8CVE-2025-32463Sudo chroot local privilege escalation via untrusted nsswitch.confSudo before 1.9.17p1 loads /etc/nsswitch.conf from a user-controlled directory when the --chroot option is used, allowing inclusion of functionality …KEVEPSS 61%analysed

Source: NIST National Vulnerability Database (record CVE-2026-1699), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.