BREW-OPENCLAW-CLI-CVE-20… (GHSA-3FQR-4CG8-H96Q)
Vulnerability from osv_homebrew – Published: 2026-08-13 17:21 – Updated: 2026-09-17 17:24 – Source websiteSummary
Browser-facing localhost mutation routes accepted cross-origin browser requests without explicit Origin/Referer validation. Loopback binding reduces remote exposure but does not prevent browser-initiated requests from malicious origins.
Impact
A malicious website can trigger unauthorized state changes against a victim's local OpenClaw browser control plane (for example opening tabs, starting/stopping the browser, mutating storage/cookies) if the browser control service is reachable on loopback in the victim's browser context.
Affected Packages / Versions
- openclaw (npm): <= 2026.2.13
- clawdbot (npm): <= 2026.1.24-3
Details
The browser control servers bind to loopback but exposed mutating HTTP endpoints without a CSRF-style guard. Browsers may send cross-origin requests to loopback addresses; without explicit validation, state-changing operations could be triggered from a non-loopback Origin/Referer.
Fix
Mutating HTTP methods (POST/PUT/PATCH/DELETE) are rejected when the request indicates a non-loopback Origin/Referer (or Sec-Fetch-Site: cross-site).
Fix Commit(s)
- openclaw/openclaw: b566b09f81e2b704bf9398d8d97d5f7a90aa94c3
Workarounds / Mitigations
- Enable browser control auth (token/password) and avoid running with auth disabled.
- Upgrade to a release that includes the fix.
Credits
- Reporter: @vincentkoc
Release Process Note
patched_versions is set to the planned next release version. Once that npm release is published, the advisory should be ready to publish with no further edits.
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "2026.2.14"
},
"package": {
"ecosystem": "Homebrew",
"name": "openclaw-cli",
"purl": "pkg:brew/openclaw-cli"
},
"ranges": [
{
"events": [
{
"introduced": "2026.1.29"
},
{
"fixed": "2026.2.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "npm",
"key": "pkg:npm/openclaw@2026.9.4",
"name": "openclaw",
"strategy": "registry",
"subject_version": "2026.9.4"
}
]
},
"details": "## Summary\nBrowser-facing localhost mutation routes accepted cross-origin browser requests without explicit Origin/Referer validation. Loopback binding reduces remote exposure but does not prevent browser-initiated requests from malicious origins.\n\n## Impact\nA malicious website can trigger unauthorized state changes against a victim\u0027s local OpenClaw browser control plane (for example opening tabs, starting/stopping the browser, mutating storage/cookies) if the browser control service is reachable on loopback in the victim\u0027s browser context.\n\n## Affected Packages / Versions\n- openclaw (npm): \u003c= 2026.2.13\n- clawdbot (npm): \u003c= 2026.1.24-3\n\n## Details\nThe browser control servers bind to loopback but exposed mutating HTTP endpoints without a CSRF-style guard. Browsers may send cross-origin requests to loopback addresses; without explicit validation, state-changing operations could be triggered from a non-loopback Origin/Referer.\n\n## Fix\nMutating HTTP methods (POST/PUT/PATCH/DELETE) are rejected when the request indicates a non-loopback Origin/Referer (or `Sec-Fetch-Site: cross-site`).\n\n## Fix Commit(s)\n- openclaw/openclaw: b566b09f81e2b704bf9398d8d97d5f7a90aa94c3\n\n## Workarounds / Mitigations\n- Enable browser control auth (token/password) and avoid running with auth disabled.\n- Upgrade to a release that includes the fix.\n\n## Credits\n- Reporter: @vincentkoc\n\n## Release Process Note\n`patched_versions` is set to the planned next release version. Once that npm release is published, the advisory should be ready to publish with no further edits.",
"id": "BREW-openclaw-cli-CVE-2026-26317",
"modified": "2026-09-17T17:24:13Z",
"published": "2026-08-13T17:21:32Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-3fqr-4cg8-h96q"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26317"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/commit/b566b09f81e2b704bf9398d8d97d5f7a90aa94c3"
},
{
"type": "PACKAGE",
"url": "https://github.com/openclaw/openclaw"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/releases/tag/v2026.2.14"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L",
"type": "CVSS_V3"
}
],
"summary": "OpenClaw affected by cross-site request forgery (CSRF) through loopback browser mutation endpoints",
"upstream": [
"GHSA-3fqr-4cg8-h96q",
"CVE-2026-26317"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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