CVE-2022-28366

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CVSS 3.1

7.5 high

EPSS

2%p81

Published

Apr 21, 2022 (Apr 21, 2022)

Modified

Jun 17, 2026

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.

Vendors: cyberneko html project htmlunit antisamy project
Products: cyberneko html, htmlunit, antisamy
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.1%)

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