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OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shared Gateway Token Rotation

Type: advisorySources: OSV

OpenClaw before 2026.4.8 contains a session management vulnerability where existing WebSocket sessions survive shared gateway token rotation. Attackers can maintain unauthorized access to WebSocket connections after token rotation by exploiting the failure to disconnect existing shared-token sessions.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-42421
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 15:51 UTC · Revision 1

Source evidence

OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shared Gateway Token Rotation

core-osv · Original source

Published 28 Apr 2026, 18:10 UTC

OpenClaw before 2026.4.8 contains a session management vulnerability where existing WebSocket sessions survive shared gateway token rotation. Attackers can maintain unauthorized access to WebSocket connections after token rotation by exploiting the failure to disconnect existing shared-token sessions.

osv:CVE-2026-42421
Complete source record
{
  "id": "23a63e2fdde640f56cb1eb98972627b779ecdd04a7fc5342d661e7e099750420",
  "url": "https://osv.dev/vulnerability/CVE-2026-42421",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shared Gateway Token Rotation",
    "summary": "OpenClaw before 2026.4.8 contains a session management vulnerability where existing WebSocket sessions survive shared gateway token rotation. Attackers can maintain unauthorized access to WebSocket connections after token rotation by exploiting the failure to disconnect existing shared-token sessions.",
    "evidence": "osv:CVE-2026-42421",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-42421",
      "aliases": [
        "CVE-2026-42421",
        "GHSA-5h3f-885m-v22w"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openclaw/openclaw",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "abe7b2c49da95a47fc0fc01661cec9bfed6941fc"
                },
                {
                  "fixed": "d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2026.4.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2026.4.7-1",
            "v2026.4.7",
            "v2026.4.5",
            "v2026.4.2",
            "v2026.4.1",
            "v2026.4.1-beta.1",
            "v2026.3.31",
            "v2026.3.31-beta.1",
            "v2026.3.28",
            "v2026.3.28-beta.1",
            "v2026.3.24",
            "v2026.3.24-beta.2",
            "v2026.3.24-beta.1",
            "v2026.3.23-2",
            "v2026.3.23",
            "v2026.3.23-beta.1",
            "v2026.3.22",
            "v2026.3.22-beta.1",
            "v2026.3.13-1",
            "v2026.3.13",
            "v2026.3.12",
            "v2026.3.11",
            "v2026.3.11-beta.1",
            "v2026.3.8",
            "v2026.3.8-beta.1",
            "v2026.3.7",
            "v2026.3.7-beta.1",
            "v2026.3.2-beta.1",
            "v2026.3.2",
            "v2026.3.1",
            "v2026.2.26",
            "v2026.2.26-beta.1",
            "v2026.2.25",
            "v2026.2.25-beta.1",
            "v2026.2.24",
            "v2026.2.24-beta.1",
            "v2026.2.23",
            "v2026.2.23-beta.1",
            "v2026.2.22",
            "v2026.2.22-beta.1",
            "v2026.2.21",
            "v2026.2.21-beta.1",
            "v2026.2.19-beta.1",
            "v2026.2.19",
            "v2026.2.17",
            "v2026.2.15-beta.1",
            "v2026.2.14",
            "v2026.2.13",
            "v2026.2.12",
            "v2026.2.9",
            "v2026.2.6-3",
            "v2026.2.6-2",
            "v2026.2.6-1",
            "v2026.2.6",
            "v2026.2.3",
            "v2026.2.2",
            "v2026.2.1",
            "v2026.1.30",
            "v2026.1.29",
            "v2026.1.24-1",
            "v2026.1.24",
            "v2026.1.23",
            "v2026.1.22",
            "v2026.1.21",
            "v2026.1.20",
            "v2026.1.16-2",
            "v2026.1.15",
            "v2026.1.14-1",
            "v2026.1.13",
            "v2026.1.12-2",
            "v2026.1.12",
            "v2026.1.11-3",
            "v2026.1.11-2",
            "v2026.1.11-1",
            "v2026.1.11",
            "v2026.1.10",
            "v2026.1.9",
            "v2026.1.8",
            "v2026.1.5-3",
            "v2026.1.5-2",
            "v2026.1.5-1",
            "v2026.1.5",
            "v2.0.0-beta5",
            "v2.0.0-beta4",
            "v2.0.0-beta3",
            "v2.0.0-beta2",
            "v2.0.0-beta1",
            "v1.3.0",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.4",
            "v0.1.3",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42421.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.435937887Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42421.json",
        "https://github.com/openclaw/openclaw/security/advisories/GHSA-5h3f-885m-v22w",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42421",
        "https://www.vulncheck.com/advisories/openclaw-websocket-session-persistence-via-shared-gateway-token-rotation",
        "https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-613"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42421.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42421",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497016,
  "published_at": "2026-04-28T18:10:12.669+00:00"
}