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CVE-2026-105844 — Payload: Prototype pollution in...

CRITICAL

Payload: Prototype pollution in Payload Import Export plugin

Published October 6, 2026Updated October 6, 2026Source: osv

Summary

### Impact An unauthenticated user could cause unintended application behavior when the Import Export plugin is enabled, allowing an attacker to submit and execute remote code (RCE). Applications that do not use `@payloadcms/plugin-import-export` are not affected. ### Patches Users should upgrade Payload packages to `>= 3.88.0` or `>= 4.0.0-canary.27.` ### Workarounds Upgrading is recommended. Until then, disable the Import Export plugin or restrict access to its endpoints.

Advisory Timeline

  • First published October 6, 2026 (6 days ago).
  • Last revised October 6, 2026 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update @payloadcms/plugin-import-export to 3.88.0 or later
npm install @payloadcms/plugin-import-export@3.88.0
npm
Update @payloadcms/plugin-import-export to 4.0.0-canary.27 or later
npm install @payloadcms/plugin-import-export@4.0.0-canary.27

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: npm (1).

PackageEcosystemAffectedFixed In
@payloadcms/plugin-import-export
npm
All versions3.88.0
@payloadcms/plugin-import-export
npm
All versions4.0.0-canary.27

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-1321
    Prototype PollutionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

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

References

Frequently Asked Questions

What is CVE-2026-105844?
Payload: Prototype pollution in Payload Import Export plugin This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-105844?
CVE-2026-105844 affects @payloadcms/plugin-import-export. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-105844 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-qf28-8hc6-vwrp

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