CVE-2023-22726: act is a project which allows for local running of github actions

Q: How do I fix CVE-2023-22726?

act: upgrade to 0.2.40. Exact commands for each OS are on this page.

Q: Is CVE-2023-22726 being exploited?

CVE-2023-22726 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-22726 affect?

CVE-2023-22726 affects act. Severity is high (CVSS 8.0). act is a project which allows for local running of github actions. The artifact server that stores artifacts from Github Action runs does not sanitize path inputs. This allows an attacker to download and overwrite arbitrary files on the hos

Q: How urgent is CVE-2023-22726?

Priority 50/100. High severity; Public exploit reference

This month

HIGH 8.0UPGRADE

CVE-2023-22726 is a high-severity flaw (CVSS 8.0) affecting act. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

act is a project which allows for local running of github actions. The artifact server that stores artifacts from Github Action runs does not sanitize path inputs. This allows an attacker to download and overwrite arbitrary files on the host from a Github Action. This issue may lead to privilege escalation. The /upload endpoint is vulnerable to path traversal as filepath is user controlled, and ultimately flows into os.Mkdir and os.Open. The /art

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-434, CWE-22
Published	2023-01-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: act project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-01-20 22:15 UTCPublished CVE record published
2026-06-17 05:36 UTCUpdated Record last modified

act project act UPGRADE

Affected: < 0.2.40

Fixed in: 0.2.40

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy act || rpm -q act || act --version

2. UPGRADE to 0.2.40 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade act

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade act

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-22726?

act: upgrade to 0.2.40. Exact commands for each OS are on this page.

Is CVE-2023-22726 being exploited?

CVE-2023-22726 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-22726 affect?

CVE-2023-22726 affects act. Severity is high (CVSS 8.0). act is a project which allows for local running of github actions. The artifact server that stores artifacts from Github Action runs does not sanitize path inputs. This allows an attacker to download and overwrite arbitrary files on the hos

How urgent is CVE-2023-22726?

Priority 50/100. High severity; Public exploit reference

Software pages

GitHub vulnerabilities

References

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