CVE-2025-46820: phpgt/Dom exposes the GITHUB_TOKEN in Dom workflow run artifact
Description
phpgt/Dom provides access to modern DOM APIs. Versions of phpgt/Dom prior to 4.1.8 expose the GITHUB_TOKEN in the Dom workflow run artifact. The ci.yml workflow file uses actions/upload-artifact@v4 to upload the build artifact. This artifact is a zip of the current directory, which includes the automatically generated .git/config file containing the run's GITHUB_TOKEN. Seeing as the artifact can be downloaded prior to the end of the workflow, there is a few seconds where an attacker can extract the token from the artifact and use it with the GitHub API to push malicious code or rewrite release commits in your repository. Any downstream user of the repository may be affected, but the token should only be valid for the duration of the workflow run, limiting the time during which exploitation could occur. Version 4.1.8 fixes the issue.
Classification
CVE ID: CVE-2025-46820
CVSS Base Severity: HIGH
CVSS Base Score: 7.1
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H
Problem Types
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-312: Cleartext Storage of Sensitive Information CWE-522: Insufficiently Protected Credentials CWE-538: Insertion of Sensitive Information into Externally-Accessible File or DirectoryAffected Products
Vendor: phpgt
Product: Dom
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.01% (probability of being exploited)
EPSS Percentile: 1.73% (scored less or equal to compared to others)
EPSS Date: 2025-06-04 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-46820https://github.com/phpgt/Dom/security/advisories/GHSA-cwj7-6v67-2cm4
https://github.com/phpgt/Dom/commit/205cddcc82c002dfa48e874494efbf4c49497394