{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.6.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1bcf71bd85059ab6574ea1159de9298dcc1212c5"
            }
          ],
          "repo": "https://github.com/simdjson/simdjson",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "CERT-PL",
    "cwe_ids": [
      "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8295.json"
  },
  "details": "An integer overflow vulnerability in the simdjson document-builder API allows incorrect buffer size calculations in \"string_builder::escape_and_append()\" when processing very large input strings on platforms with limited \"size_t\" width (e.g., 32-bit builds). The overflow can cause insufficient buffer allocation, leading to out-of-bounds memory reads in SIMD routines and potentially resulting in information disclosure, memory corruption, or malformed JSON output.\nThis vulnerability has been fixed in 4.6.4 release",
  "id": "CVE-2026-8295",
  "modified": "2026-07-08T05:36:35.291898807Z",
  "published": "2026-05-14T10:27:41.953Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://cert.pl/posts/2026/05/CVE-2026-8295"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8295.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/simdjson/simdjson/releases/tag/v4.6.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8295"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/simdjson/simdjson"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Integer overflow in simdjson"
}