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.
Metrics
Affected Vendors & Products
References
History
Wed, 01 Apr 2026 02:15:00 +0000
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Nektos
Nektos act |
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| Vendors & Products |
Nektos
Nektos act |
Tue, 31 Mar 2026 19:15:00 +0000
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ssvc
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Tue, 31 Mar 2026 03:00:00 +0000
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| Description | 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. | |
| Title | act: actions/cache server allows malicious cache injection | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-31T18:53:13.564Z
Reserved: 2026-03-25T15:29:04.745Z
Link: CVE-2026-34042
Updated: 2026-03-31T18:50:29.289Z
Status : Received
Published: 2026-03-31T03:15:58.220
Modified: 2026-03-31T03:15:58.220
Link: CVE-2026-34042
No data.