High severity · published Sep 28, 2026
CVE-2026-54160
Network UPS Tools: A PWN Request in make-dist workflow can execute PR-controlled code with write-scoped GITHUB_TOKEN
8.2
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NU
nut · networkupstools
< 658b24ef8410648ceca6d5a59e8690efbc8c36bc · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54160
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54160
x_refsource_CONFIRM
https://github.com/networkupstools/nut/security/advisories/GHSA-w6wj-3r73-fxmh
x_refsource_MISC
https://github.com/networkupstools/nut/commit/658b24ef8410648ceca6d5a59e8690efbc8c36bc
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