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NVD 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.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-3514 Authentication Bypass in Prefect 3.6.19 via Health Check Path Exemption https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3514
Post summary
A new authentication bypass vulnerability (CVE‑2026‑3514) is disclosed for Prefect 3.6.19, affecting the Health Check Path. No PoC, exploitation details, or mitigation information are provided.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | prefect | prefect | - | - | - |