PT-2026-45704 · Prefecthq · Prefecthq/Prefect

Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-3514

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-3514

Affected Products

Prefecthq/Prefect

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-3514 · Security Note
• https://github.com/prefecthq/prefect/commit/e21617125335025b4b27e7d6f0ca028e8e8f3b79 · Note
• https://huntr.com/bounties/c540e5e1-f74f-44f4-bfa0-9764ff6daa75 · Note