{"id":"CVE-2026-57434","aliases":["GHSA-9cv2-cfxc-v4v2"],"url":"https://o3.security/vulnerability/CVE-2026-57434","summary":"Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes","details":"Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.","published":"2026-06-25T14:32:10.604Z","modified":"2026-08-12T03:51:28.734008857Z","cvss":null,"epss":{"score":0.0046,"percentile":0.38375,"asOf":"2026-09-07"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"nokogiri","fixedVersion":"1.19.4"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57434.json"},{"type":"ADVISORY","url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-9cv2-cfxc-v4v2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57434"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:28.734008857Z"}}