CVE-2026-34041

[CVE catalog]

Severity

High · CVSS 8CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Published

Mar 31, 2026, 1:43:25 AM UTC

Source

[NVD] · [CVE record]

EPSS

0.62% · Oct 25, 2026

A flaw was found in act, a project that allows local execution of GitHub Actions. This vulnerability arises from the unconditional processing of deprecated workflow commands, specifically ::set-env:: and ::add-path::, which were previously disabled due to environment injection risks. A remote attacker can exploit this by injecting these commands when a workflow step echoes untrusted data to standard output. This allows the attacker to set arbitrary environment variables or modify the system's execution path for all subsequent steps within the job, potentially leading to privilege escalation or arbitrary code execution. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.