# CVE-2026-105855: Payload CMS access control bypass in password field update

Source: https://junglewise.ai/threats/cve-2026-105855-payload-didn-t-enforce-field-level-password-update-restrictions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-105855 · Severity: high · CVSS 4 · Published 2026-10-06

Payload is a headless CMS and backend framework that manages content and user authentication. A vulnerability allows authenticated users to bypass field-level restrictions and update password fields they should not have permission to modify, potentially leading to account takeover or unauthorized credential changes.

Technologies: [payload (npm)](https://junglewise.ai/threats/technologies/payload), [Payload CMS Payload](https://junglewise.ai/threats/technologies/payload-cms-payload). Vendors: [npm](https://junglewise.ai/threats/vendors/npm), [Payload CMS](https://junglewise.ai/threats/vendors/payload-cms).

## Quick answers

**Is CVE-2026-105855 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105855 being exploited in the wild.

**How severe is CVE-2026-105855?** High severity, with a CVSS score of 4, published 6 October 2026.

**Which products and versions are affected?** payload (npm) SEMVER:introduced=0,fixed=3.90.0; Payload CMS Payload < 3.90.0, >= 4.0.0-canary.0 and < 4.0.0-canary.34.

**Is there a fix for CVE-2026-105855?** Yes. payload (npm): upgrade to 3.90.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-105855 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-105855?** Check whether you run payload (npm) or Payload CMS Payload at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- payload (npm): upgrade to 3.90.0 or later

  ```sh
  npm install payload@3.90.0
  ```


## Technical details

The vulnerability is an improper access control flaw (CWE-284) in Payload's authentication collection where field-level access.update restrictions on password fields are not enforced server-side. An authenticated attacker with low privileges and network access can send requests to modify password fields despite configured restrictions, gaining confidentiality and integrity impacts.

## Affected products

- Payload CMS Payload < 3.90.0, >= 4.0.0-canary.0 and < 4.0.0-canary.34

## Identifiers

- CVE-2026-105855
- GHSA-fx49-4h83-wjv9

## Timeline

- 2026-09-18: disclosed: Vulnerability published in payloadcms/payload
- 2026-10-06: advisory: GitHub Security Advisory GHSA-fx49-4h83-wjv9 published

## References

- [https://api.github.com/users/pavelkohout396](https://api.github.com/users/pavelkohout396)

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