Vulnerability in Networkupstools Nut
CVE-2026-54160
Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. Prior to commits 658b24e and 1aa31d1, the GitHub Actions script used to prepare NUT tarballs and update GitHub Checks statuses and PR comments about it was mis-structured in terms of mixing code running with higher privileges (single-use token generated with write permissions) and untrusted inputs (PR source branch). A malicious PR run from a fork could extract the GITHUB_TOKEN value. It could potentially be abused while it was valid (while the GHA job ran) to manipulate Git repository contents, commit checks/statuses, or issue/PR comments, according to permissions it was issued with. This issue has been patched via commits 658b24e and 1aa31d1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Networkupstools Nut — versions < 658b24ef8410648ceca6d5a59e8690efbc8c36bc
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-54160?
- CVE-2026-54160 is a high-severity vulnerability in Networkupstools Nut, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.2/10. Published 2026-09-28.
- How severe is CVE-2026-54160?
- High severity. CVSS v3 base score is 8.2 out of 10.