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XWiki Multiple Vulnerabilities - DoS and XSS Attacks (WID-SEC-2026-1089)

Favicon for wid.cert-bund.de CERT-Bund Security Advisories
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Summary

CERT-Bund issued security advisory WID-SEC-2026-1089 identifying critical vulnerabilities (CVSS Base Score 9.6) in XWiki open-source wiki software. Affected versions include those prior to 16.10.16, 17.4.8, and 17.10.1. An attacker can exploit these vulnerabilities to conduct denial of service attacks and cross-site scripting (XSS) attacks. Mitigations are available.

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What changed

CERT-Bund published a critical security advisory for XWiki software vulnerabilities affecting multiple operating systems including Linux, UNIX, Windows, and others. The vulnerabilities have a CVSS Base Score of 9.6 (critical) and enable remote attackers to conduct denial of service and cross-site scripting attacks.

Organizations running affected XWiki versions should immediately apply available updates or mitigations to prevent potential exploitation. The advisory applies to technology companies, government agencies, and any organizations using XWiki for wiki or knowledge management systems.

What to do next

  1. Update XWiki to patched versions (16.10.16, 17.4.8, 17.10.1 or later)
  2. Apply available mitigations to affected systems
  3. Review CVE references for additional technical details

Archived snapshot

Apr 14, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

[WID-SEC-2026-1089] xwiki: Mehrere Schwachstellen CVSS Base Score 9.6 (kritisch) CVSS Temporal Score 8.3 (hoch) Remoteangriff ja Datum 13.04.2026 Stand 14.04.2026 Mitigation ja

Betroffene Systeme

Betriebssystem

  • Linux
  • Sonstiges
  • UNIX
  • Windows

Produktbeschreibung

XWiki ist eine Open-Source-Wiki-Software-Plattform, für die Erstellung und Verwaltung von Wikis und Knowledge-Management-Systemen

Produkte

13.04.2026
- Open Source xwiki <16.10.16

  • Open Source xwiki <17.4.8

  • Open Source xwiki <17.10.1

Angriff

Angriff

Ein Angreifer kann mehrere Schwachstellen in xwiki ausnutzen, um einen Denial of Service Angriff durchzuführen, und um einen Cross-Site Scripting Angriff durchzuühren. CVE Informationen Versionshistorie Feedback zum Advisory geben

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CERT-Bund Security Advisories wid.cert-bund.de/content/public/securityAdvisory/rss
Data Privacy & Cybersecurity

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Classification

Agency
CERT-Bund
Published
April 13th, 2026
Instrument
Guidance
Legal weight
Non-binding
Stage
Final
Change scope
Substantive

Who this affects

Geographic scope
Germany DE

Taxonomy

Primary area
Cybersecurity

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