CVE-2026-71497

Data: 2026-08-07

Severity: Medium

CVSS Score: 4.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N)

Riferimenti:

• https://nvd.nist.gov/vuln/detail/CVE-2026-71497

• https://github.com/advisories/GHSA-pmhh-3w7g-xqp8

• https://github.com/jhy/jsoup/security/advisories/GHSA-pmhh-3w7g-xqp8

• https://github.com/jhy/jsoup/issues/2538

• https://github.com/jhy/jsoup/releases/tag/jsoup-1.23.1

Libreria: org.jsoup:jsoup (versioni affette: 1.14.3 - 1.22.2)

Descrizione

CWE-79: Improper Neutralization of Input During Web Page Generation (“Cross-site Scripting”)

[GHSA-pmhh-3w7g-xqp8] jsoup: Cleaner may expose markup with custom raw-text elements

When a custom Safelist permits certain raw-text elements, jsoup may incorrectly sanitize malformed HTML containing a tag name that ends in a control character. The tag may acquire the parsing behavior of a different element, causing content that should remain text to be emitted as active markup after serialization and potentially allowing XSS.

jsoup’s built-in Safelists are unaffected.

Patches: Upgrade to jsoup 1.23.1.

Workarounds: Until upgrading, do not permit raw-text elements in custom Safelists used to clean untrusted HTML.

Additional security considerations: This fix addresses malformed tag-name handling only. Permitting raw-text elements in a custom Safelist does not make their contents inherently safe. For example, applications that permit style must apply appropriate CSS safeguards separately, because jsoup does not parse or sanitize CSS.

GovWay

Versione affette:

• 3.3.x: non affetta

• 3.4.x: <= 3.4.3

Risoluzione:

• 3.3.x: -

• 3.4.x: 3.4.4