Security advisory

{
  "id": "94dd4e30f73efed780e5912886f981171f973a4a6b462412a59a1d817dfcff80",
  "url": "https://osv.dev/vulnerability/CVE-2025-69820",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-69820",
    "summary": "Directory Traversal vulnerability in Beam beta9 v.0.1.521 allows a remote attacker to obtain sensitive information via the joinCleanPath function.",
    "evidence": "osv:CVE-2025-69820",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-69820",
      "aliases": [
        "CVE-2023-51651",
        "CVE-2025-69820",
        "GHSA-557v-xcg6-rm5m",
        "GHSA-73jg-4qh6-3f4g",
        "GO-2026-4390"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/beam-cloud/beta9",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c1cd75e813cf7d53e916157d920099e89ef45caa"
                },
                {
                  "last_affected": "c1cd75e813cf7d53e916157d920099e89ef45caa"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:beam:beta9:0.1.521:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.1.521"
                      },
                      {
                        "last_affected": "0.1.521"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.1.521",
            "worker-0.1.521"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-69820.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.469343401Z",
      "provider": "osv",
      "references": [
        "https://github.com/beam-cloud/beta9/blob/c1cd75e813cf7d53e916157d920099e89ef45caa/pkg/abstractions/volume/multipart.go#L45",
        "https://github.com/ryotaromatsui/CVEs/tree/main/CVE-2025-69820",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/69xxx/CVE-2025-69820.json",
        "https://github.com/aws/aws-sdk-php/security/advisories/GHSA-557v-xcg6-rm5m",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-69820"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/69xxx/CVE-2025-69820.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-51651",
        "evidence": "/aliases"
      },
      {
        "value": "CVE-2025-69820",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493694,
  "published_at": "2026-01-22T00:00:00+00:00"
}