Is CVE-2026-39397 actively exploited?

No active exploitation of CVE-2026-39397 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39397 be exploited remotely?

Yes. CVE-2026-39397 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39397?

CVE-2026-39397 has a CVSS score of 9.4 (CRITICAL).

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CRITICAL

CVE-2026-39397

CWE-862Published: April 7, 2026· Updated: Apr 8, 2026

9.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.5th

Official Description

@delmaredigital/payload-puck is a PayloadCMS plugin for integrating Puck visual page builder. Prior to 0.6.23, all /api/puck/* CRUD endpoint handlers registered by createPuckPlugin() called Payload's local API with the default overrideAccess: true, bypassing all collection-level access control. The access option passed to createPuckPlugin() and any access rules defined on Puck-registered collections were silently ignored on these endpoints. This vulnerability is fixed in 0.6.23.

NVD Source

Technical Analysis

CVE-2026-39397 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.4.