CVE-2023-22726 (act)

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 /artifact endpoint is vulnerable to path traversal as …

act action actions artifacts cve download endpoint escalation files github github action github actions host inputs issue local may path path traversal privilege privilege escalation project server vulnerable