CVE-2026-105858— Payload: Remote Code Execution through first-register
Quick assessment
Affected
payloadcms payload
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Payload 是一个免费且开源的无头内容管理系统。在 3.90.0 之前的版本以及 4.0.0-canary.34 之前的 canary（测试）版本中，如果启用了本地认证且尚未创建初始用户，攻击者可以通过构造恶意请求利用公开的首次注册操作实现远程代码执行（RCE）。该漏洞已在 3.90.0 版本和 4.0.0-canary.34 版本中得到修复。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-105858
Vulnerability Information
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Vulnerability Title
Payload: Remote Code Execution through first-register
Source: CVE Program / CVE List V5
Vulnerability 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, a crafted request to the public first-register operation can execute code remotely when local authentication is enabled and no initial user has been created. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| payloadcms | payload | < 3.90.0 | - |
|
II. Public POCs for CVE-2026-105858
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-105858 (3)
-
https://github.com/payloadcms/payload/releases/tag/v3.90.0 x_refsource_MISC
-
https://github.com/payloadcms/payload/security/advisories/GHSA-97rh-rhh2-7vjv x_refsource_CONFIRM
Same Patch Batch · payloadcms · 2026-10-06 · 21 CVEs total
| CVE-2026-105857 | 10.0 CRITICAL | Payload: RCE in Payload Form Builder |
| CVE-2026-105845 | 9.8 CRITICAL | Payload: SQL Injection in SQLite and Postgres |
| CVE-2026-105859 | 9.8 CRITICAL | Payload: Unauthorized update to collection documents |
| CVE-2026-105844 | 9.3 CRITICAL | Payload: Prototype pollution in Payload Import Export plugin |
| CVE-2026-105851 | 9.3 CRITICAL | Payload: Field access control bypass on auth collections |
| CVE-2026-105850 | 8.8 HIGH | Payload: Order confirmation validation issue in Payload Ecommerce |
| CVE-2026-105854 | 8.7 HIGH | Payload: ReDoS in Multipart Content-Type Validation |
| CVE-2026-105856 | 8.6 HIGH | Payload: SQL injection in SQLite/Postgres |
| CVE-2026-105806 | 8.6 HIGH | Payload: Improper access control for MCP API keys |
| CVE-2026-105849 | 7.7 HIGH | Payload: API key disclosure through ordinary document reads |
| CVE-2026-105855 | 7.6 HIGH | Payload: Field-level password update restrictions were not enforced |
| CVE-2026-105861 | 7.2 HIGH | Payload external upload trust validation issue |
| CVE-2026-105853 | 7.1 HIGH | Payload: Token refresh and password reset responses may expose restricted user fields |
| CVE-2026-105847 | 7.1 HIGH | Payload: Polymorphic join queries could disclose hidden fields |
| CVE-2026-105860 | 7.1 HIGH | Payload: Tenant authorization bypass in Multi-Tenant Plugin |
| CVE-2026-105852 | 6.9 MEDIUM | Payload relationship-query authorization bypass |
| CVE-2026-105805 | 6.9 MEDIUM | Payload: Sort queries could expose protected field information |
| CVE-2026-105848 | 6.4 MEDIUM | Payload: Insufficient Access Control in Stripe REST Proxy |
| CVE-2026-105846 | 6.1 MEDIUM | Payload: Untrusted redirect URL parameter exploit |
| CVE-2026-105804 | 5.7 MEDIUM | Payload: Password hashes use insufficient PBKDF2 iterations |
IV. Related Vulnerabilities
Same product: payload
-
CVE-2026-105861
Payload external upload trust validation issue -
CVE-2026-105860
Payload: Tenant authorization bypass in Multi-Tenant Plugin -
CVE-2026-105859
Payload: Unauthorized update to collection documents -
CVE-2026-105857
Payload: RCE in Payload Form Builder -
CVE-2026-105856
Payload: SQL injection in SQLite/Postgres
Same vendor: payloadcms
-
CVE-2026-105861
Payload external upload trust validation issue -
CVE-2026-105860
Payload: Tenant authorization bypass in Multi-Tenant Plugin -
CVE-2026-105859
Payload: Unauthorized update to collection documents -
CVE-2026-105857
Payload: RCE in Payload Form Builder -
CVE-2026-105856
Payload: SQL injection in SQLite/Postgres
Same weakness: CWE-94
-
CVE-2026-105857
Payload: RCE in Payload Form Builder -
CVE-2026-105801
openapi-python-client: Malicious OpenAPI Documents can cause -
CVE-2026-105796
Kiota: Code injection through doc-comment delimiter reformat -
CVE-2026-82531
Smarty before 4.5.8 and 5.x before 5.8.5 PHP Code Injection -
CVE-2026-39776
WordPress Tabs plugin <= 2.5 - Remote Code Execution (RCE) v
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