Incorrect Authorization Affecting copyparty package, versions [,1.20.17)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Incorrect Authorization vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PYTHON-COPYPARTY-20158965
- published27 Sept 2026
- disclosed18 Aug 2026
- creditUnknown
Introduced: 18 Aug 2026
CVE-2026-70657 (opens in a new tab)How to fix?
Upgrade copyparty to version 1.20.17 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the process handling file and directory keys. An attacker can gain unauthorized read access to the containing folder by converting a valid file key into a directory key. This is only exploitable if both filekeys and dirkeys are enabled simultaneously with volflag dk or dks combined with fk or fka, which are default-disabled and must be explicitly enabled in the volume configuration.