How severe is CVE-2026-39397?

CVE-2026-39397 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-39397 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-39397?

CVE-2026-39397 affects Delmaredigital Payload-puck. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-39397?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-39397 have an EU (EUVD) identifier?

Yes. CVE-2026-39397 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19921.

When was CVE-2026-39397 published?

CVE-2026-39397 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-39397

CVE-2026-39397 is a critical-severity vulnerability in Delmaredigital Payload-puck with a CVSS 3.x base score of 9.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19921
Weakness: CWE-862
Affected product: Delmaredigital Payload-puck
Published: 2026-04-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-39397?: @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.
How severe is CVE-2026-39397?: CVE-2026-39397 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-39397 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-39397?: CVE-2026-39397 affects Delmaredigital Payload-puck. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-39397?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-39397 have an EU (EUVD) identifier?: Yes. CVE-2026-39397 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19921.
When was CVE-2026-39397 published?: CVE-2026-39397 was published on 2026-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:delmaredigital:payload-puck:*:*:*:*:*:node.js:*:*

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