Open Babel smilesformat.cpp ParseSmiles heap-based overflow

{
  "id": "a95a78b9151a4a2149de5ff741f9431cc8b4fc2e2110fead6d8c7ca99759698c",
  "url": "https://osv.dev/vulnerability/CVE-2025-10996",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Open Babel smilesformat.cpp ParseSmiles heap-based overflow",
    "summary": "A vulnerability was detected in Open Babel up to 3.1.1. This issue affects the function OBSmilesParser::ParseSmiles of the file /src/formats/smilesformat.cpp. Performing manipulation results in heap-based buffer overflow. The attack needs to be approached locally. The exploit is now public and may be used.",
    "evidence": "osv:CVE-2025-10996",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-10996",
      "aliases": [
        "CVE-2025-10996",
        "GHSA-j35x-w4gj-pf7w",
        "PYSEC-2026-2781"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
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              "repo": "https://github.com/openbabel/openbabel",
              "type": "GIT",
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                    "range": [
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                        "introduced": "3.1.0"
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                    "strategy": "StandaloneSingleVersion"
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                        "introduced": "3.1.1"
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                        "last_affected": "3.1.1"
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.1.1"
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                    "source": "CPE_RANGE"
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          ],
          "versions": [
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            "3.1.1",
            "openbabel-3-1-0",
            "openbabel-3-1-1"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-10996.json"
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      ],
      "modified": "2026-10-28T02:30:40.143432648Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/10xxx/CVE-2025-10996.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-10996",
        "https://vuldb.com/?id.325924",
        "https://vuldb.com/?submit.654060",
        "https://github.com/openbabel/openbabel/issues/2831",
        "https://vuldb.com/?ctiid.325924",
        "https://github.com/user-attachments/files/22318556/poc.zip"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-119",
          "CWE-122"
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        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/10xxx/CVE-2025-10996.json"
      }
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    "related_cves": [
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        "value": "CVE-2025-10996",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 507770,
  "published_at": "2025-09-26T02:32:06.533+00:00"
}