CVE-2026-105866
Payload: Unauthenticated account-lockout denial of service
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.
INFO
Published Date :
Oct. 6, 2026, 5:17 p.m.
Last Modified :
Oct. 15, 2026, 12:08 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Payload to version 3.90.0 or later.
- Deploy the updated version to production.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-105866.
| URL | Resource |
|---|---|
| https://github.com/payloadcms/payload/commit/1c46204a73a0a9f988a80c52690eee5a4ada3cf1 | Patch |
| https://github.com/payloadcms/payload/releases/tag/v3.90.0 | Patch Release Notes |
| https://github.com/payloadcms/payload/security/advisories/GHSA-v5gf-vpjc-pc7w | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-105866 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-105866
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-105866 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-105866 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:payloadcms:payload:4.0.0:canary1:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary10:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary11:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary12:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary13:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary14:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary15:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary16:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary17:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary18:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary19:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary2:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary3:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary4:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary5:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary6:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary7:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary8:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary9:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary0:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.90.0 *cpe:2.3:a:payloadcms:payload:4.0.0:canary20:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary21:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary22:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary23:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary24:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary25:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary26:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary27:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary28:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary29:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary30:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary31:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary32:*:*:*:node.js:*:* *cpe:2.3:a:payloadcms:payload:4.0.0:canary33:*:*:*:node.js:*:* Added Reference Type GitHub, Inc.: https://github.com/payloadcms/payload/commit/1c46204a73a0a9f988a80c52690eee5a4ada3cf1 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/payloadcms/payload/releases/tag/v3.90.0 Types: Patch, Release Notes Added Reference Type GitHub, Inc.: https://github.com/payloadcms/payload/security/advisories/GHSA-v5gf-vpjc-pc7w Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 06, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-105866', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-06T17:34:37.543263Z'} -
New CVE Received by [email protected]
Oct. 06, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-307 Added CWE CWE-645 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/105xxx/CVE-2026-105866.json">CVE-2026-105866</a> Added Reference https://github.com/payloadcms/payload/commit/1c46204a73a0a9f988a80c52690eee5a4ada3cf1 Added Reference https://github.com/payloadcms/payload/releases/tag/v3.90.0 Added Reference https://github.com/payloadcms/payload/security/advisories/GHSA-v5gf-vpjc-pc7w