---
title: "CVE-2026-105851: Payload - Access Control Bypass"
description: "Payload 3.0.0 to < 3.90.0 and canary < 4.0.0-canary.34 contains an access control bypass caused by duplicate operation copying values despite hidden fields or access rules, letting attackers bypass access restrictions, exploit requires crafted duplicate operation."
url: https://panop.io/threat-heartbeat/CVE-2026-105851/
---

# CVE-2026-105851 Payload - Access Control Bypass

Payload 3.0.0 to < 3.90.0 and canary < 4.0.0-canary.34 contains an access control bypass caused by duplicate operation copying values despite hidden fields or access rules, letting attackers bypass access restrictions, exploit requires crafted duplicate operation.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.31% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105851)

## Details

Type

Access Control Bypass

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-284](https://cwe.mitre.org/data/definitions/284.html)

## Vendor fix

Update to versions 3.90.0 or 4.0.0-canary.34 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105851](https://nvd.nist.gov/vuln/detail/CVE-2026-105851)
- [https://github.com/payloadcms/payload/commit/099ef12e2682f076aa8e8d0ccb790536b4e1027f](https://github.com/payloadcms/payload/commit/099ef12e2682f076aa8e8d0ccb790536b4e1027f)
- [https://github.com/payloadcms/payload/releases/tag/v3.90.0](https://github.com/payloadcms/payload/releases/tag/v3.90.0)
- [https://github.com/payloadcms/payload/security/advisories/GHSA-vc4h-q48j-5hcx](https://github.com/payloadcms/payload/security/advisories/GHSA-vc4h-q48j-5hcx)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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