{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.19.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c139a3da0fe0cae7499a0bafa20f2875877c585b"
            }
          ],
          "repo": "https://github.com/sparklemotion/nokogiri",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-v2fc-qm4h-8hqv"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-401"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79771.json"
  },
  "details": "Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.",
  "id": "CVE-2026-79771",
  "modified": "2026-08-27T11:31:07.813314793Z",
  "published": "2026-08-25T15:16:03.736Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79771.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v2fc-qm4h-8hqv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79771"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nokogiri-before-memory-leak-via-xslt-transform"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nokogiri before 1.19.3 Memory Leak via XSLT Transform"
}