CVE-2026-39397

Name: CVE-2026-39397
Creator: NVD / NIST
Published: 2026-04-07T21:17:18.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-39397 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. @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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.38%

29.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Delmaredigital	Payload-Puck	< 0.6.23

References

https://github.com/delmaredigital/payload-puck/commit/9148201c6bbfa140d44546438027a2f8a70f79a4Patch
https://github.com/delmaredigital/payload-puck/issues/7Exploit, Issue Tracking
https://github.com/delmaredigital/payload-puck/security/advisories/GHSA-65w6-pf7x-5g85Patch, Vendor Advisory

Timeline

Published: Apr 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-39397?

How severe is CVE-2026-39397?

CVE-2026-39397 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-39397?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-39397?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST