CVE-2026-71497: Jhy Jsoup

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

jsoup is a Java library for working with real-world HTML. From 1.14.3 until 1.23.1, jsoup's HTML parser could incorrectly handle a malformed tag name ending in a control character, causing the tag to acquire the parsing behavior of a different element. When a custom Safelist permits certain raw-text elements, this misparsing can cause content that should remain inert text to be emitted as active markup after serialization, potentially resulting in cross-site scripting. jsoup's built-in Safelists are not affected. This issue is fixed in version 1.23.1.

Affected products

• Jhy Jsoup: from 1.14.3, before 1.23.1 (fixed in 1.23.1)

Published 2026-08-06. Last modified 2026-09-10.