{"id":"CVE-2026-79771","aliases":["GHSA-v2fc-qm4h-8hqv"],"url":"https://o3.security/vulnerability/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.","published":"2026-08-25T15:16:03.736Z","modified":"2026-09-03T16:25:58.935411582Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"RubyGems","name":"nokogiri","fixedVersion":"1.19.3"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-03T16:25:58.935411582Z"}}