CVE-2026-105844 PUBLISHED

Payload: Prototype pollution in Payload Import Export plugin

Assigner: GitHub_M
Reserved: 05.10.2026 Published: 06.10.2026 Updated: 06.10.2026

Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.88.0 and canary versions before 4.0.0-canary.27, an unauthenticated user can submit prototype-sensitive field paths when @payloadcms/plugin-import-export is enabled, causing unintended application behavior that can lead to remote code execution. This issue is fixed in versions 3.88.0 and 4.0.0-canary.27.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor payloadcms
Product payload
Versions
  • Version >= 3.0.0, < 3.88.0 is affected
  • Version >= 4.0.0-canary.0, < 4.0.0-canary.27 is affected
Vendor @payloadcms
Product plugin-import-export
Versions
  • Version >= 3.0.0, < 3.88.0 is affected
  • Version >= 4.0.0-canary.0, < 4.0.0-canary.27 is affected

References

Problem Types

  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') CWE