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Vulnerabilities CVE-2026-71497

CVE-2026-71497

Medium
Open
TLP:CLEAR

jsoup: Cleaner may expose markup with custom raw-text elements

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Description

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.

Details

CVSS Score
4.7
EPSS Score
0.19%

8.9th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Confidence
90%
Published
Aug 6, 2026
Last Modified
Aug 7, 2026
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