CVE-2026-31998: Openclaw OpenClaw's Synology Chat DmPolicy=allowlist Failed Vulnerability
MODERATECVE-2026-31998 is a MODERATE openclaw's synology chat dmpolicy=allowlist failed vulnerability (CWE-284: Improper Access Control) affecting Openclaw libraries in the npm ecosystem. The issue involves openclaw's synology chat dmpolicy=allowlist failed open on empty alloweduserids, allowing unauthorized agent dispatch. Remediation is available by upgrading affected packages to version 2026.2.24.
CVE-2026-31998 at a Glance
How to Fix CVE-2026-31998
To remediate this vulnerability, upgrade all affected Openclaw 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 openclaw@2026.2.24Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls openclawHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-31998, inspect your project dependencies using npm:
npm ls openclawAnalyze the terminal output to locate any version of Openclaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.2.24), your application is affected.
Note: The npm ls openclaw 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Openclaw, 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-2026-31998 Affected Openclaw Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
openclaw
|
npm |
≥ 2026.2.22
< 2026.2.24
|
2026.2.24
|
References
Frequently Asked Questions
What is CVE-2026-31998?
Which Openclaw versions are affected?
What version fixes CVE-2026-31998?
Is openclaw affected?
What CWE is associated with CVE-2026-31998?
How can I check npm dependencies for CVE-2026-31998?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-gw85-xp4q-5gp9",
"modified" : "2026-03-20T21:36:30Z",
"published" : "2026-03-03T23:03:49Z",
"aliases" : [ "CVE-2026-31998" ],
"summary" : "OpenClaw's Synology Chat dmPolicy=allowlist failed open on empty allowedUserIds, allowing unauthorized agent dispatch",
"details" : "### Summary\nIn `openclaw` versions `2026.2.22` and `2026.2.23`, the optional `synology-chat` channel plugin had an authorization fail-open condition: when `dmPolicy` was `allowlist` and `allowedUserIds` was empty/unset, unauthorized senders were still allowed through to agent dispatch.\n\nThis is assessed as **medium** severity because it requires channel/plugin setup and Synology sender access, but can still trigger downstream agent/tool actions.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `>= 2026.2.22, <= 2026.2.23`\n- Latest published affected version at patch time: `2026.2.23`\n- Planned patched version: `2026.2.24`\n\n### Details\nRoot cause was a policy mismatch across plugin code paths:\n1. Default resolved DM policy was `allowlist`.\n2. Empty `allowedUserIds` was treated as allow-all.\n3. Webhook auth in allowlist mode depended on that helper.\n\nResult: `allowlist` with empty list behaved like open access for inbound Synology senders.\n\n### Fix Commit(s)\n- `0ee30361b8f6ef3f110f3a7b001da6dd3df96bb5`\n- `7655c0cb3a47d0647cbbf5284e177f90b4b82ddb`\n\n### Release Process Note\n`patched_versions` is pre-set to the planned next release (`>= 2026.2.24`). Once npm release `2026.2.24` is published, the advisory can be published directly.\n\nOpenClaw thanks @tdjackey for reporting.\n\n\n### Publication Update (2026-02-25)\n`openclaw@2026.2.24` is published on npm and contains the fix commit(s) listed above. This advisory now marks `>= 2026.2.24` as patched.",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "openclaw"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2026.2.22"
}, {
"fixed" : "2026.2.24"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2026.2.23"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-gw85-xp4q-5gp9"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31998"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/0ee30361b8f6ef3f110f3a7b001da6dd3df96bb5"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/7655c0cb3a47d0647cbbf5284e177f90b4b82ddb"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openclaw/openclaw"
}, {
"type" : "WEB",
"url" : "https://www.vulncheck.com/advisories/openclaw-authorization-bypass-in-synology-chat-plugin-via-empty-alloweduserids"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-284", "CWE-863" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-03T23:03:49Z",
"nvd_published_at" : null
}
}