kokke tiny-regex-c Pattern re.c matchstar redos

{
  "id": "b044dc83ff159a68624e41079d1a8c3808a3b02e7bb918463ac29171d87108e8",
  "url": "https://osv.dev/vulnerability/CVE-2026-11478",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "kokke tiny-regex-c Pattern re.c matchstar redos",
    "summary": "A flaw has been found in kokke tiny-regex-c up to f2632c6d9ed25272987471cdb8b70395c2460bdb. This vulnerability affects the function matchstar of the file re.c of the component Pattern Handler. This manipulation causes inefficient regular expression complexity. The attack is restricted to local execution. The exploit has been published and may be used. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:CVE-2026-11478",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-11478",
      "aliases": [
        "CVE-2026-11478"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kokke/tiny-regex-c",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f2632c6d9ed25272987471cdb8b70395c2460bdb"
                },
                {
                  "last_affected": "f2632c6d9ed25272987471cdb8b70395c2460bdb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "f2632c6d9ed25272987471cdb8b70395c2460bdb"
                      },
                      {
                        "last_affected": "f2632c6d9ed25272987471cdb8b70395c2460bdb"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  }
                ]
              }
            }
          ],
          "versions": [
            "f2632c6d9ed25272987471cdb8b70395c2460bdb"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-11478.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.295195773Z",
      "provider": "osv",
      "references": [
        "https://github.com/kokke/tiny-regex-c/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11478.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-11478",
        "https://vuldb.com/cve/CVE-2026-11478",
        "https://vuldb.com/submit/833966",
        "https://vuldb.com/vuln/369098",
        "https://github.com/kokke/tiny-regex-c/issues/100",
        "https://vuldb.com/vuln/369098/cti",
        "https://github.com/user-attachments/files/28046213/tiny-regex-c-redos-poc.zip"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1333",
          "CWE-400"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11478.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-11478",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491009,
  "published_at": "2026-06-08T02:00:16.513+00:00"
}