{"cve":"CVE-2022-28366","nvd":{"published":"2022-04-21T23:15:10.383","modified":"2026-06-17T04:38:26.287","status":"Modified","description":"Certain Neko-related HTML parsers allow a denial of service via crafted Processing Instruction (PI) input that causes excessive heap memory consumption. In particular, this issue exists in HtmlUnit-Neko through 2.26, and is fixed in 2.27. This issue also exists in CyberNeko HTML through 1.9.22 (also affecting OWASP AntiSamy before 1.6.6), but 1.9.22 is the last version of CyberNeko HTML. NOTE: this may be related to CVE-2022-24839.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://github.com/nahsra/antisamy/releases/tag/v1.6.6","https://search.maven.org/artifact/net.sourceforge.htmlunit/neko-htmlunit","https://sourceforge.net/projects/htmlunit/files/htmlunit/2.27/","https://github.com/nahsra/antisamy/releases/tag/v1.6.6","https://search.maven.org/artifact/net.sourceforge.htmlunit/neko-htmlunit"],"products":["antisamy_project:antisamy","cyberneko_html_project:cyberneko_html","htmlunit:htmlunit"],"source":"nvd","synced_at":"2026-10-19T21:30:03.577988018+00:00"},"epss":{"cve":"CVE-2022-28366","score":0.02184,"percentile":0.82388,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g9hh-vvx3-v37v","url":"https://osv.dev/vulnerability/GHSA-g9hh-vvx3-v37v","summary":"Denial of service in HtmlUnit-Neko","modified":"2024-12-05T05:41:29.184965Z","packages":[{"ecosystem":"Maven","name":"net.sourceforge.htmlunit:neko-htmlunit","purl":"pkg:maven/net.sourceforge.htmlunit/neko-htmlunit","ranges":["<2.27"],"fixed":["2.27"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}