CVE-2026-105866— Payload: Unauthenticated account-lockout denial of service
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 版本中，未授权的攻击者如果知道某个账户的电子邮件地址或用户名，可以利用本地认证集合的账户锁定机制，阻止该账户登录。此问题已在 3.90.0 和 4.0.0-canary.34 版本中得到修复。
Possible ATT&CK Techniques 1 AI
T1110.004 · Credential StuffingAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| payloadcms | payload | < 3.90.0 |
affected |
>= 4.0.0-canary.0, < 4.0.0-canary.34 |
affected |
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I. Basic Information for CVE-2026-105866
Vulnerability Information
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Vulnerability Title
Payload: Unauthenticated account-lockout denial of service
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, an unauthenticated attacker who knows an account email address or username can abuse the account lockout mechanism of a local-authentication collection to prevent that account from signing in. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| payloadcms | payload | < 3.90.0 | - |
|
II. Public POCs for CVE-2026-105866
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-105866 (3)
-
https://github.com/payloadcms/payload/releases/tag/v3.90.0 x_refsource_MISC
-
https://github.com/payloadcms/payload/security/advisories/GHSA-v5gf-vpjc-pc7w x_refsource_CONFIRM
Same Patch Batch · payloadcms · 2026-10-06 · 29 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-2026-105863 | 9.2 CRITICAL | Payload authentication token field handling issue |
| CVE-2026-105850 | 8.8 HIGH | Payload: Order confirmation validation issue in Payload Ecommerce |
| CVE-2026-105862 | 8.7 HIGH | Payload: Bypassed sanitization of user uploaded SVGs |
| CVE-2026-105854 | 8.7 HIGH | Payload: ReDoS in Multipart Content-Type Validation |
| CVE-2026-105806 | 8.6 HIGH | Payload: Improper access control for MCP API keys |
| CVE-2026-105868 | 8.6 HIGH | Payload: Uploaded XML files could execute same-origin JavaScript |
| CVE-2026-105856 | 8.6 HIGH | Payload: SQL injection in SQLite/Postgres |
| CVE-2026-105865 | 8.1 HIGH | Payload: Incomplete validation during the upload file lifecycle |
| CVE-2026-105858 | 8.1 HIGH | Payload: Remote Code Execution through first-register |
| 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-2026-105867 | 7.1 HIGH | Payload: Client uploads could overwrite S3 objects |
| CVE-2026-106100 | 7.1 HIGH | Payload: Field-level write access bypass in Payload on MongoDB |
| CVE-2026-105860 | 7.1 HIGH | Payload: Tenant authorization bypass in Multi-Tenant Plugin |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: payload
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CVE-2026-106100
Payload: Field-level write access bypass in Payload on Mongo -
CVE-2026-105868
Payload: Uploaded XML files could execute same-origin JavaSc -
CVE-2026-105867
Payload: Client uploads could overwrite S3 objects -
CVE-2026-105865
Payload: Incomplete validation during the upload file lifecy -
CVE-2026-105864
Payload: Cross-tenant create in @payloadcms/plugin-multi-ten
Same vendor: payloadcms
-
CVE-2026-106100
Payload: Field-level write access bypass in Payload on Mongo -
CVE-2026-105868
Payload: Uploaded XML files could execute same-origin JavaSc -
CVE-2026-105867
Payload: Client uploads could overwrite S3 objects -
CVE-2026-105865
Payload: Incomplete validation during the upload file lifecy -
CVE-2026-105864
Payload: Cross-tenant create in @payloadcms/plugin-multi-ten
Same weakness: CWE-307
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CVE-2026-105835
PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp -
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linlinjava litemall Login Endpoint AdminAuthController.java -
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Monta monta.app Improper Restriction of Excessive Authentica -
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Russh: Configured server auth-attempt cap is not enforced in
V. Comments for CVE-2026-105866
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