🛡️ CVE-2023-22726
🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-434 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 the path is variable is user controlled, and the specified file is ultimately returned by the server. This has been addressed in version 0.2.40. Users are advised to upgrade. Users unable to upgrade may, during implementation of Open and OpenAtEnd for FS, ensure to use ValidPath() to check against path traversal or clean the user-provided paths manually.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE CWE-434
Public Exploit ⚠️ Yes
Source NVD
Published 2023-01-20
Updated 2026-06-15
Modified 2024-11-21

Affected Packages

Software From version Fixed in
act — 0.2.40
github.com/nektos/act — —

References

Issue Tracking, Third Party Advisory https://github.com/nektos/act/issues/1553
Issue Tracking, Third Party Advisory https://github.com/nektos/act/issues/1553

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