Vulnerability Intelligence Report
Payload: Prototype pollution in Payload Import Export plugin
CVE-2026-105844
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.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-1321 ↗CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| payloadcms | payload | >= 3.0.0, < 3.88.0 (affected), >= 4.0.0-canary.0, < 4.0.0-canary.27 (affected) |
| @payloadcms | plugin-import-export | >= 3.0.0, < 3.88.0 (affected), >= 4.0.0-canary.0, < 4.0.0-canary.27 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-10-05T23:06:29 |
| Published | 2026-10-06T15:57:05 |
| Last Updated | 2026-10-06T15:57:05 |
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