CVE-2026-34042 in act

Resumen (Inglés)

act is a project which allows for local running of github actions. Prior to version 0.2.86, act's built in actions/cache server listens to connections on all interfaces and allows anyone who can connect to it including someone anywhere on the internet to create caches with arbitrary keys and retrieve all existing caches. If they can predict which cache keys will be used by local actions, they can create malicious caches containing whatever files they please most likely allowing arbitrary remote code execution within the docker container. This issue has been patched in version 0.2.86.

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Responsable

GitHub_M

Reservar

2026-03-25

Divulgación

2026-03-31

Estado

Confirmado

Voces

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidad	CWE	Exp	Con	CVE
354314	nektos act Docker Container escalada de privilegios	862	No está definido	Arreglo oficial	CVE-2026-34042

Fuentes

• MITRE
• NVD
• CVE Details