CVE-2026-42436: OpenClaw Browser Snapshot And Screenshot Routes Vulnerability
MODERATECVE-2026-42436 is a MODERATE (CVSS 7.7) browser snapshot and screenshot routes vulnerability (CWE-862: Missing Authorization) affecting OpenClaw libraries in the npm ecosystem. The issue involves browser snapshot and screenshot routes could expose internal page content after navigation. Remediation is available by upgrading affected packages to version 2026.4.14.
CVE-2026-42436 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-2026-42436
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-2026-42436, 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. 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-2026-42436 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-2026-42436?
Which OpenClaw versions are affected?
What version fixes CVE-2026-42436?
Is openclaw affected?
What is the CVSS score of CVE-2026-42436?
What CWE is associated with CVE-2026-42436?
How can I check npm dependencies for CVE-2026-42436?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-c4qm-58hj-j6pj",
"modified" : "2026-05-08T01:32:06Z",
"published" : "2026-04-17T21:47:36Z",
"aliases" : [ "CVE-2026-42436" ],
"summary" : "OpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation",
"details" : "## Summary\n\nBrowser snapshot and screenshot routes could expose internal page content after 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\nAuthenticated browser tool callers could use snapshot, screenshot, or tab routes that did not consistently validate the final browser target after route-driven navigation. In restrictive browser SSRF configurations this could expose content from internal or otherwise disallowed pages.\n\n## Technical Details\n\nThe fix re-checks browser snapshot, screenshot, and tab route results against the configured browser SSRF policy before returning page content. Regression coverage was added around snapshot/screenshot and tab-route flows.\n\n## Fix\n\nThe issue was fixed in #66040. 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- `b75ad800a59009fc47eaa3471410f69046150e59`\n- PR: #66040\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:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/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-c4qm-58hj-j6pj"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42436"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/pull/66040"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openclaw/openclaw"
}, {
"type" : "WEB",
"url" : "https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routes"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862", "CWE-918" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-17T21:47:36Z",
"nvd_published_at" : "2026-05-05T12:16:18Z"
}
}