GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

BREW-OPENCLAW-CLI-CVE-20… (GHSA-VW3H-Q6XQ-JJM5)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:21 – Updated: 2026-09-17 17:24 – Source website
VLAI
Summary
OpenClaw: Voice-call realtime WebSocket accepted oversized frames
Details

Summary

Voice-call realtime WebSocket accepted oversized frames.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: >= 2026.4.9 < 2026.4.10
  • Patched versions: >= 2026.4.10

Impact

The voice-call realtime WebSocket path could accept oversized frames, creating a remote availability risk for deployments exposing that webhook path.

Technical Details

The fix rejects oversized realtime WebSocket frames before processing them.

Fix

The issue was fixed in #63890. The first stable tag containing the fix is v2026.4.10, and openclaw@2026.4.14 includes the fix.

Fix Commit(s)

  • afadb7dae6738819ad9c7d2597ace0516957d20e
  • PR: #63890

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Reporters

Thanks to G0odUser from ADLab of VenusTech Thanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "2026.4.10"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "openclaw-cli",
        "purl": "pkg:brew/openclaw-cli"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.4.9"
            },
            {
              "fixed": "2026.4.10"
            }
          ],
          "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\n\nVoice-call realtime WebSocket accepted oversized frames.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `\u003e= 2026.4.9 \u003c 2026.4.10`\n- Patched versions: `\u003e= 2026.4.10`\n\n## Impact\n\nThe voice-call realtime WebSocket path could accept oversized frames, creating a remote availability risk for deployments exposing that webhook path.\n\n## Technical Details\n\nThe fix rejects oversized realtime WebSocket frames before processing them.\n\n## Fix\n\nThe issue was fixed in #63890. The first stable tag containing the fix is `v2026.4.10`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `afadb7dae6738819ad9c7d2597ace0516957d20e`\n- PR: #63890\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.10 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Reporters\n\nThanks to G0odUser from ADLab of VenusTech\nThanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.",
  "id": "BREW-openclaw-cli-CVE-2026-42437",
  "modified": "2026-09-17T17:24:13Z",
  "published": "2026-08-13T17:21:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42437"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/pull/63890"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-path"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw: Voice-call realtime WebSocket accepted oversized frames",
  "upstream": [
    "GHSA-vw3h-q6xq-jjm5",
    "CVE-2026-42437"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.