Heap-buffer-overflow in post_process_template

{
  "id": "66d3d9e4d712b5ee45b1398e55330b94f2570a2879ab57e400a0f1e4c33bd4f7",
  "url": "https://osv.dev/vulnerability/OSV-2020-668",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in post_process_template",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19013 ``` Crash type: Heap-buffer-overflow READ 4 Crash state: post_process_template parser_shutdown parse_string ```",
    "evidence": "osv:OSV-2020-668",
    "products": [
      {
        "name": {
          "value": "lwan",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2020-668",
      "aliases": [
        "OSV-2020-668"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "git://github.com/lpereira/lwan",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0fc10a8c657339b2a26b8bf1b64d4431a293a24f"
                },
                {
                  "fixed": "2c9dc72966276f35f9bf697ee49038c1cdee24bb"
                }
              ]
            }
          ],
          "package": {
            "name": "lwan",
            "purl": "pkg:generic/lwan",
            "ecosystem": "OSS-Fuzz"
          },
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/lwan/OSV-2020-668.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-20T17:25:26.875898602Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19013"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389889,
  "published_at": "2020-07-01T00:00:23.600853+00:00"
}