CVE-2026-34041

Name
CVE-2026-34041
Description
act is a project which allows for local running of github actions. Prior to version 0.2.86, act unconditionally processes the deprecated ::set-env:: and ::add-path:: workflow commands, which was disabled due to environment injection risks. When a workflow step echoes untrusted data to stdout, an attacker can inject these commands to set arbitrary environment variables or modify the PATH for all subsequent steps in the job. This issue has been patched in version 0.2.86.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/nektos/act/commit/0c739c8e39c41aa5a07665f732da9cab6df0097a
security-advisories@github.com https://github.com/nektos/act/releases/tag/v0.2.86
security-advisories@github.com https://github.com/nektos/act/security/advisories/GHSA-xmgr-9pqc-h5vw

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:nektos:act:*:*:*:*:*:*:*:* act >= None < 0.2.86

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
act edge-community 0.2.83-r4 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.83-r3 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.83-r2 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.83-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.83-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.82-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.82-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.80-r3 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.80-r2 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.80-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.80-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.79-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.79-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.78-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.77-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.77-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.76-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.76-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.75-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.75-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.74-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.73-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.71-r2 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.71-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act edge-community 0.2.71-r0 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act 3.23-community 0.2.82-r5 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act 3.23-community 0.2.82-r4 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act 3.23-community 0.2.82-r3 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act 3.23-community 0.2.82-r2 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable
act 3.23-community 0.2.82-r1 Meng Zhuo <mengzhuo@iscas.ac.cn> possibly vulnerable