CVE-2026-105858: CWE-94: Improper Control of Generation of Code ('Code Injection') in payloadcms payload
Description
PayloadCMS versions prior to 3.90.0 and canary versions before 4.0.0-canary.34 contain a code injection vulnerability in the public first-register operation. This vulnerability allows remote code execution when local authentication is enabled and no initial user has been created. The issue is resolved in versions 3.90.0 and 4.0.0-canary.34.
CVSS v3.1
Score 8.1high
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105858 is a code injection vulnerability (CWE-94) in PayloadCMS, a headless content management system. In affected versions, a crafted request to the public first-register operation can remotely execute arbitrary code if local authentication is enabled and no initial user exists. This vulnerability is fixed in PayloadCMS versions 3.90.0 and 4.0.0-canary.34.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability, as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
Upgrade PayloadCMS to version 3.90.0 or later, or to 4.0.0-canary.34 or later. These versions include the official fix for this vulnerability. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T23:06:29.748Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac526892cdf04f656c62a38
Added to database: 10/06/2026, 16:49:13 UTC
Last enriched: 10/06/2026, 17:03:30 UTC
Last updated: 10/06/2026, 18:57:28 UTC
Views: 13
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