CVE-2026-105855: CWE-284: Improper Access Control in payloadcms payload
Description
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, the server fails to enforce a field-level access.update restriction on the password field of an authentication collection. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
CVSS v4.0
Score 7.6high
Affected software
payloadcms
payload
pkg:github/payloadcms/payloadRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105855 describes an improper access control vulnerability (CWE-284) in PayloadCMS, a headless content management system. Specifically, in versions before 3.90.0 and canary versions before 4.0.0-canary.34, the server fails to enforce update restrictions on the password field of an authentication collection. This flaw could allow users with limited privileges to update password fields improperly. The issue is resolved in versions 3.90.0 and 4.0.0-canary.34.
Potential Impact
The vulnerability allows unauthorized or insufficiently privileged users to update password fields in the authentication collection, potentially leading to unauthorized account access or privilege escalation. The CVSS 4.0 score of 7.6 (high severity) reflects the network attack vector with low attack complexity but requiring privileges and partial user interaction. Confidentiality and integrity impacts are high due to the sensitive nature of password fields.
Mitigation Recommendations
Upgrade to PayloadCMS version 3.90.0 or later, or to canary version 4.0.0-canary.34 or later, where the issue is fixed. No other mitigations are indicated by the vendor advisory. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T23:06:29.748Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac526892cdf04f656c62a35
Added to database: 10/06/2026, 16:49:13 UTC
Last enriched: 10/06/2026, 17:03:42 UTC
Last updated: 10/06/2026, 21:42:10 UTC
Views: 10
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