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CVE-2026-34042 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://code.forgejo.org/forgejo/runner/issues/294 GitHub, Inc.
https://github.com/nektos/act/commit/c28c27e141e8b54f9853de82f421ee09846751f7 GitHub, Inc.
https://github.com/nektos/act/releases/tag/v0.2.86 GitHub, Inc.
https://github.com/nektos/act/security/advisories/GHSA-x34h-54cw-9825 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-862 Missing Authorization GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-34042
NVD Published Date:
03/30/2026
NVD Last Modified:
04/16/2026
Source:
GitHub, Inc.