a heap-based buffer overflow vulnerability in ttttupup/wxhelper via src/mongoose.

{
  "id": "c41f5cfc39f6b8772e64b1d63d838b1eb3e7aa6683b8c94b3efa1c6f3b959141",
  "url": "https://osv.dev/vulnerability/CVE-2026-24822",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "a heap-based buffer overflow vulnerability in ttttupup/wxhelper via src/mongoose.",
    "summary": "Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C. This issue affects wxhelper: through 3.9.10.19-v1.",
    "evidence": "osv:CVE-2026-24822",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-24822",
      "aliases": [
        "CVE-2026-24822"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/AU:Y/R:U/V:D/RE:M/U:Red"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ttttupup/wxhelper",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "c58293edc5ef4c68fd1bee1a59cfe7bbd19201b5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.9.10.19-v1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.9.10.19-v1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.9.10.19-v1",
            "3.9.8.25-v2",
            "3.9.8.25-v1",
            "3.9.7.29-v1",
            "tool"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24822.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.134339936Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24822.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-24822",
        "https://github.com/ttttupup/wxhelper/pull/515",
        "https://github.com/ttttupup/wxhelper"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-122",
          "CWE-787"
        ],
        "cna_assigner": "GovTech CSG",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24822.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-24822",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494766,
  "published_at": "2026-01-27T08:58:45.455+00:00"
}