Detections
Analytics

SCA: security update for github.com/nektos/act (GHSA-x34h-54cw-9825)

high Tenable Cloud Security Plugin ID 439584

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-34042)

Solution

Update the github.com/nektos/act library and its related packages to version 0.2.86 or later.

See Also

https://github.com/advisories/GHSA-x34h-54cw-9825

Plugin Details

Severity: High

ID: 439584

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 4/1/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Percentile: 96.71

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:N

CVSS Score Source: CVE-2026-34042

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/27/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2026-34042

cwe: CWE-862