{"id":"CVE-2026-79771","summary":"Nokogiri before 1.19.3 Memory Leak via XSLT Transform","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.","aliases":["GHSA-v2fc-qm4h-8hqv"],"modified":"2026-08-27T11:47:41.313838388Z","published":"2026-08-25T15:16:03.736Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79771.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-401"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sparklemotion/nokogiri","events":[{"introduced":"0"},{"fixed":"c139a3da0fe0cae7499a0bafa20f2875877c585b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.19.3"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v1.19.2","v1.19.1","v1.19.0","v1.18.10","v1.18.9","v1.18.8","v1.18.7","v1.18.6","v1.18.5","v1.18.4","v1.18.3","v1.18.2","v1.18.1","v1.18.0","v1.18.0.rc1","v1.17.0","v1.16.0","v1.16.0.rc1","v1.15.2","v1.15.1","v1.15.0","v1.14.1","v1.14.0","v1.14.0.rc1","v1.13.0","v1.12.3","v1.12.2","v1.12.1","v1.12.0","v1.12.0.rc1","v1.11.3","v1.11.2","v1.11.1","v1.11.0","v1.11.0.rc4","v1.11.0.rc3","v1.11.0.rc2","v1.11.0.rc1","v1.10.3","v1.10.2","v1.8.5","v1.10.1","v1.10.0","v1.10.0.rc1","v1.9.1","v1.9.0","v1.9.0.rc1","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.0.1","v1.7.0","v1.6.8","v1.6.8.rc3","v1.6.8.rc2","v1.6.8.rc1","v1.6.7.rc4","v1.6.6.2","v1.6.7.rc3","v1.6.7.rc2","v1.6.7.rc1","1.7.0.1-linux-binary1","v1.6.6.1","v1.6.6","v1.6.5","v1.6.4","v1.6.3.1","v1.6.3","v1.6.3.rc3","v1.6.3.rc2","v1.6.3.rc1","v1.6.2.1","v1.6.2","v1.6.2.rc3","v1.6.2.rc1","v1.6.2.beta.1","v1.6.0","v1.5.9","v1.6.0.rc1","v1.5.8","v1.5.7","v1.5.7.rc3","v1.5.7.rc2","v1.5.7.rc1","v1.5.6","v1.5.6.rc2","v1.5.5.rc2","v1.5.5.rc1","v1.5.4.rc3","v1.5.4.rc2","v1.5.4.rc1","v1.5.3","v1.5.3.rc6","v1.5.3.rc5","v1.5.3.rc4","v1.5.3.rc3","v1.5.3.rc1","v1.5.2","v1.5.1","v1.5.1.rc1","v1.5.0","v1.5.0.beta.3","v1.5.0.beta.4","REL_1.5.0.beta.2","REL_1.5.0.beta.1","REL_1.0.7","REL_1.0.6","REL_1.0.5","REL_1.0.4","REL_1.0.3","REL_1.0.2","REL_1.0.1","REL_1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79771.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}