---
title: "CVE-2026-54160: Network UPS Tools - Authentication Bypass"
description: "Network UPS Tools contains a token exposure vulnerability caused by mixing privileged code and untrusted inputs in GitHub Actions scripts, letting attackers from forked PRs extract GITHUB_TOKEN and manipulate repository contents, exploit requires a malicious PR from a fork."
url: https://panop.io/threat-heartbeat/CVE-2026-54160/
---

# CVE-2026-54160 Network UPS Tools - Authentication Bypass

Network UPS Tools contains a token exposure vulnerability caused by mixing privileged code and untrusted inputs in GitHub Actions scripts, letting attackers from forked PRs extract GITHUB\_TOKEN and manipulate repository contents, exploit requires a malicious PR from a fork.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.20% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-54160)

## Details

Type

Authentication Bypass

CVSS vector

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

Published

28 September 2026

Updated

15 October 2026

Weakness

[CWE-829](https://cwe.mitre.org/data/definitions/829.html)

## Vendor fix

Update to include commits 658b24e and 1aa31d1 or latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-54160](https://nvd.nist.gov/vuln/detail/CVE-2026-54160)
- [https://github.com/networkupstools/nut/security/advisories/GHSA-w6wj-3r73-fxmh](https://github.com/networkupstools/nut/security/advisories/GHSA-w6wj-3r73-fxmh)
- [https://github.com/networkupstools/nut/commit/658b24ef8410648ceca6d5a59e8690efbc8c36bc](https://github.com/networkupstools/nut/commit/658b24ef8410648ceca6d5a59e8690efbc8c36bc)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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