Incorrect Authorization Affecting prefect package, versions [,3.6.22.dev7)
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.
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- published1 Jul 2026
- disclosed2 Jun 2026
- creditUnknown
Introduced: 2 Jun 2026
CVE-2026-3514 (opens in a new tab)How to fix?
Upgrade prefect to version 3.6.22.dev7 or higher.
Overview
prefect is a Prefect is a new workflow management system, designed for modern infrastructure and powered by the open-source Prefect Core workflow engine. Users organize Tasks into Flows, and Prefect takes care of the rest.
Affected versions of this package are vulnerable to Incorrect Authorization due to improper handling of URL path exemptions in the authentication middleware. An attacker can gain unauthorized access to sensitive information by creating resources with names ending in health or ready and accessing endpoints without authentication.