by Kastro
Paper/Archive/CVE-2026-105851

CVE-2026-105851

payloadcms payload — Payload: Field access control bypass on auth collections

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
31
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 16.3.163 × 203.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, the duplicate operation copies values from a source document even when a field is hidden or its access.read or access.create rule rejects that value for the caller. The disableDuplicate setting does not prevent this access-control bypass. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Affected

ProductAffectedFixed inSource
payload> 3.0.0, < 3.90.0–CNA
payload> 4.0.0-canary.0, < 4.0.0-canary.34–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/payloadcms/payload/security/advisories/GHSA-vc4h-q48j-5hcxrefgithub.com/payloadcms/payload/commit/099ef12e2682f076aa8e8d0ccb790536b4e1027frefgithub.com/payloadcms/payload/releases/tag/v3.90.0