CVE-2026-106100: Payload Field-level Write Access Bypass Vulnerability
HIGHCVE-2026-106100 is a HIGH (CVSS 7.1) field-level write access bypass vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Payload libraries in the npm ecosystem. The issue involves field-level write access bypass in payload on mongodb. Remediation is available by upgrading affected packages to version 3.87.0, 4.0.0-canary.20.
CVE-2026-106100 at a Glance
Security Impact
CVSS: 7.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N).
How to Fix CVE-2026-106100
To remediate this vulnerability, upgrade all affected Payload dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install @payloadcms/db-mongodb@3.87.0npm install @payloadcms/db-mongodb@4.0.0-canary.20Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls @payloadcms/db-mongodbHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-106100, inspect your project dependencies using npm:
npm ls @payloadcms/db-mongodbAnalyze the terminal output to locate any version of Payload in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.87.0), your application is affected.
Note: The npm ls @payloadcms/db-mongodb command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Payload, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-106100 Affected Payload Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
@payloadcms/db-mongodb
|
npm |
< 3.87.0
|
3.87.0
|
|
@payloadcms/db-mongodb
|
npm |
≥ 4.0.0-canary.0
< 4.0.0-canary.20
|
4.0.0-canary.20
|
References
Frequently Asked Questions
What is CVE-2026-106100?
Which Payload versions are affected?
What version fixes CVE-2026-106100?
Is @payloadcms/db-mongodb affected?
What is the CVSS score of CVE-2026-106100?
What CWE is associated with CVE-2026-106100?
How can I check npm dependencies for CVE-2026-106100?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4ww4-68q3-h7g5",
"modified" : "2026-10-07T16:19:57Z",
"published" : "2026-10-07T16:19:57Z",
"aliases" : [ "CVE-2026-106100" ],
"summary" : "Payload: Field-level write access bypass in Payload on MongoDB",
"details" : "### Impact\nA vulnerability in field-level access control could allow an authenticated user to modify fields they are not permitted to change on documents they can otherwise update.\n\nYou are affected if:\nPayload version < `3.87.0` (or a `4.0.0-canary` release before `4.0.0-canary.20`) using the MongoDB adapter (`@payloadcms/db-mongodb`) with any collection that relies on field-level access control to restrict writes under certain conditions.\n\nRelational adapters (Postgres, SQLite) are not affected.\n\n### Patches\nHandling of incoming field data has been hardened so field-level access control is enforced consistently.\n\nUsers should upgrade to `3.87.0` (or `4.0.0-canary.20` on the `4.x` line) or later.\n\n### Workarounds\nThere is no complete workaround. Upgrading to `3.87.0` (or `4.0.0-canary.20` on the `4.x` line) is recommended.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "@payloadcms/db-mongodb"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "3.87.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "@payloadcms/db-mongodb"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0-canary.0"
}, {
"fixed" : "4.0.0-canary.20"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/payloadcms/payload/security/advisories/GHSA-4ww4-68q3-h7g5"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-106100"
}, {
"type" : "WEB",
"url" : "https://github.com/payloadcms/payload/commit/2a69863deb0e3c87e36c1b3b17ab2d5b02fcb941"
}, {
"type" : "WEB",
"url" : "https://github.com/payloadcms/payload/commit/8f77dffa9552885ec2710768cfee15b57e389935"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/payloadcms/payload"
}, {
"type" : "WEB",
"url" : "https://github.com/payloadcms/payload/releases/tag/v3.87.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-639", "CWE-915" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-10-07T16:19:57Z",
"nvd_published_at" : "2026-10-06T17:17:23Z"
}
}