Whisper Money has IDOR Vulnerability on sync/balances endpoint

{
  "id": "b1e9fd12b44f41feb08d12d2488afaa27f4412b684e40b91fc265d0110200d8f",
  "url": "https://osv.dev/vulnerability/CVE-2026-23844",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Whisper Money has IDOR Vulnerability on sync/balances endpoint",
    "summary": "Whisper Money is a personal finance application. Versions prior to 0.1.5 have an insecure direct object reference vulnerability. A user can update/create account balances in other users' bank accounts. Version 0.1.5 fixes the issue.",
    "evidence": "osv:CVE-2026-23844",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-23844",
      "aliases": [
        "CVE-2026-23844",
        "GHSA-c4g3-wpxr-2m74"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/whisper-money/whisper-money",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bd835dc8418b506534dd68a5623b072746aaab1a"
                },
                {
                  "fixed": "80117c3edeaf5c5a5166f3815fc555a15b5ce686"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:whisper.money:whisper_money:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.1.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "80117c3edeaf5c5a5166f3815fc555a15b5ce686"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.1.3",
            "v0.1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23844.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.626634833Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23844.json",
        "https://github.com/whisper-money/whisper-money/security/advisories/GHSA-c4g3-wpxr-2m74",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23844",
        "https://github.com/whisper-money/whisper-money/commit/80117c3edeaf5c5a5166f3815fc555a15b5ce686",
        "https://github.com/whisper-money/whisper-money/pull/60"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-488"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23844.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23844",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490895,
  "published_at": "2026-01-19T20:43:29.212+00:00"
}