🛡️ CVE-2026-3514
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-863 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In version 3.6.19 of prefecthq/prefect, an authentication bypass vulnerability exists due to the improper handling of URL path exemptions for health check probes. Specifically, the authentication middleware exempts any URL path ending with 'health' or 'ready' from authentication checks. This allows an attacker to create resources with names ending in 'health' or 'ready' and access them without authentication. Affected endpoints include those for variables, flows, work pools, work queues, and deployments. This vulnerability can lead to unauthorized access to sensitive information, such as API keys and database credentials, stored in Prefect Variables.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-863
Public Exploit ⚠️ Yes
Source NVD
Published 2026-06-02
Updated 2026-06-04
Modified 2026-06-03

Affected Packages

Software From version Fixed in
prefect — 3.6.22
unknown — —

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