{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-79771", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-25T14:29:43.528Z", "datePublished": "2026-08-25T15:16:03.736Z", "dateUpdated": "2026-08-25T15:16:03.736Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-25T15:16:03.736Z"}, "datePublic": "2026-04-27T00:00:00.000Z", "title": "Nokogiri before 1.19.3 Memory Leak via XSLT Transform", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Missing Release of Memory after Effective Lifetime", "cweId": "CWE-401", "type": "CWE"}]}], "affected": [{"vendor": "sparklemotion", "product": "nokogiri", "defaultStatus": "unaffected", "packageURL": "pkg:gem/nokogiri", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "1.19.3"}, {"version": "1.19.3", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.19.3"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-v2fc-qm4h-8hqv", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-v2fc-qm4h-8hqv)"}, {"name": "VulnCheck Advisory: Nokogiri before 1.19.3 Memory Leak via XSLT Transform", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/nokogiri-before-memory-leak-via-xslt-transform"}], "credits": [{"lang": "en", "value": "Captainjack-kor", "type": "reporter"}, {"lang": "en", "value": "flavorjones", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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