Security advisory

{
  "id": "2da62dc3fe7ce7aacf23ba8d69c9073417799396fd58cfdabcd0e994896e54e7",
  "url": "https://osv.dev/vulnerability/CVE-2026-31243",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-31243",
    "summary": "The mem0 1.0.0 server lacks authentication and authorization controls for its memory reset and table re-creation functionality accessible via the DELETE /memories endpoint. An unauthenticated attacker can send a DELETE request that triggers a reset operation, leading to the execution of a CREATE TABLE SQL statement. This can cause unexpected table re-creation, schema disruption, potential data loss, and denial of service for the memory management service.",
    "evidence": "osv:CVE-2026-31243",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-31243",
      "aliases": [
        "CVE-2026-31243"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mem0ai/mem0",
              "type": "GIT",
              "events": [
                {
                  "introduced": "394203d1b5f56385d28690ea27c0d746007ff940"
                },
                {
                  "last_affected": "394203d1b5f56385d28690ea27c0d746007ff940"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mem0:mem0:1.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "1.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31243.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.727575137Z",
      "provider": "osv",
      "references": [
        "https://www.notion.so/CVE-2026-31243-35d1e139318881c6a6cffbe366c238a6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31243.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31243",
        "https://github.com/mem0ai/mem0"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31243.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31243",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492535,
  "published_at": "2026-05-12T00:00:00+00:00"
}