---
cve: "CVE-2026-71497"
severity: "MEDIUM"
cvss: 4.7
epss: "19%"
vendor: "jhy"
kev: false
exploited: false
published: "2026-08-06 22:18:32"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T10:34:11+02:00"
---

# CVE-2026-71497

> 4.7 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 92f1aca552548b484bc7d4b94c51e48b8e6eca70 (Commit)
- bb077a8b0da1203cf11d5139967f0d52fe8f5a59 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-71497) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_