CVE-2026-43527: OpenClaw Browser SSRF Policy Default Allowed Vulnerability
MODERATECVE-2026-43527 is a MODERATE (CVSS 7.7) browser ssrf policy default allowed vulnerability (CWE-1188: Initialization of a Resource with an Insecure Default) affecting OpenClaw libraries in the npm ecosystem. The issue involves browser ssrf policy default allowed private-network navigation. Remediation is available by upgrading affected packages to version 2026.4.14.
CVE-2026-43527 at a Glance
Security Impact
CVSS: 7.7
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:C/C:H/I:N/A:N).
How to Fix CVE-2026-43527
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@2026.4.14Run 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-2026-43527, 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 2026.4.14), 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-1188: Initialization of a Resource with an Insecure Default, where the product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure. 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-2026-43527 Affected OpenClaw Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
openclaw
|
npm |
< 2026.4.14
|
2026.4.14
|
References
Frequently Asked Questions
What is CVE-2026-43527?
Which OpenClaw versions are affected?
What version fixes CVE-2026-43527?
Is openclaw affected?
What is the CVSS score of CVE-2026-43527?
What CWE is associated with CVE-2026-43527?
How can I check npm dependencies for CVE-2026-43527?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-53vx-pmqw-863c",
"modified" : "2026-05-08T01:32:14Z",
"published" : "2026-04-17T21:58:15Z",
"aliases" : [ "CVE-2026-43527" ],
"summary" : "OpenClaw: Browser SSRF policy default allowed private-network navigation",
"details" : "## Summary\n\nBrowser SSRF policy default allowed private-network navigation.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `< 2026.4.14`\n- Patched versions: `>= 2026.4.14`\n\n## Impact\n\nBrowser SSRF protection could allow private-network navigation by default in paths where restrictive behavior was expected, exposing internal services or metadata endpoints through browser-driven requests.\n\n## Technical Details\n\nThe fix preserves strict SSRF configuration semantics, keeps private-network access disabled unless explicitly opted in, and updates loopback CDP readiness handling for the stricter default.\n\n## Fix\n\nThe issue was fixed in #66354 and #66386. The first stable tag containing the fix is `v2026.4.14`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `024f4614a1a1831406e763adc40ef226e3d5e9ed`\n- `1dabfef28db523e7de81edeb3dd689e9171236a2`\n- `213c36cf51121ef6c05cfccd78037371f968f31a`\n- `7eecfa411df3d12e6b810e6ca5df47254fc3db3f`\n- PR: #66354, #66386\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.14 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Credits\n\nThanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "openclaw"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2026.4.14"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-53vx-pmqw-863c"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43527"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/pull/66354"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/pull/66386"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/024f4614a1a1831406e763adc40ef226e3d5e9ed"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/1dabfef28db523e7de81edeb3dd689e9171236a2"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/213c36cf51121ef6c05cfccd78037371f968f31a"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/7eecfa411df3d12e6b810e6ca5df47254fc3db3f"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openclaw/openclaw"
}, {
"type" : "WEB",
"url" : "https://www.vulncheck.com/advisories/openclaw-server-side-request-forgery-via-private-network-navigation"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-1188", "CWE-918" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-17T21:58:15Z",
"nvd_published_at" : "2026-05-05T12:16:18Z"
}
}