OpenClaw 2026.1.14-1 < 2026.2.2 - Allowlist Bypass via displayName and Cross-Homeserver localpart Matching in Matrix Plugin

{
  "id": "0b676ef232536f65d207c46c19cbda78e4c27de7471398356310a32c79fb3048",
  "url": "https://osv.dev/vulnerability/CVE-2026-28471",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenClaw 2026.1.14-1 < 2026.2.2 - Allowlist Bypass via displayName and Cross-Homeserver localpart Matching in Matrix Plugin",
    "summary": "OpenClaw version 2026.1.14-1 prior to 2026.2.2, with the Matrix plugin installed and enabled, contain a vulnerability in which DM allowlist matching could be bypassed by exact-matching against sender display names and localparts without homeserver validation. Remote Matrix users can impersonate allowed identities by using attacker-controlled display names or matching localparts from different homeservers to reach the routing and agent pipeline.",
    "evidence": "osv:CVE-2026-28471",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-28471",
      "aliases": [
        "CVE-2026-28471",
        "GHSA-rmxw-jxxx-4cpc"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openclaw/openclaw",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8daab932a2a8691073ac282ee594498b5e6cc3c0"
                },
                {
                  "fixed": "95cd2210f93d6ab2acc5e29dbad6065294365863"
                },
                {
                  "fixed": "8f3bfbd1c4fb967a2ddb5b4b9a05784920814bcf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "2026.1.14-1"
                      },
                      {
                        "fixed": "2026.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8f3bfbd1c4fb967a2ddb5b4b9a05784920814bcf"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "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"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28471.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.106104398Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28471.json",
        "https://github.com/openclaw/openclaw/security/advisories/GHSA-rmxw-jxxx-4cpc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-28471",
        "https://www.vulncheck.com/advisories/openclaw-allowlist-bypass-via-displayname-and-cross-homeserver-localpart-matching-in-matrix",
        "https://github.com/openclaw/openclaw/commit/8f3bfbd1c4fb967a2ddb5b4b9a05784920814bcf"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28471.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-28471",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508911,
  "published_at": "2026-03-05T21:59:47.388+00:00"
}