CVE-2026-71497

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.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/jhy/jsoup/commit/92f1aca552548b484bc7d4b94c51e48b8e6eca70
https://github.com/jhy/jsoup/issues/2538
https://github.com/jhy/jsoup/releases/tag/jsoup-1.23.1
https://github.com/jhy/jsoup/security/advisories/GHSA-pmhh-3w7g-xqp8

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-06 22:18

Updated : 2026-09-10 20:41

NVD link : CVE-2026-71497

Mitre link : CVE-2026-71497

CVE.ORG link : CVE-2026-71497

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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