CVE-2026-91999: Apache Sling XSS: Improper escaping in the XSS Webconsole plugin

Published Sep 23, 2026
·
Updated

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS.

This issue affects Apache Sling XSS: before 2.4.12.

Users are recommended to upgrade to version 2.4.12, which fixes the issue.

Affected Software

1 affected component
Apache Sling XSS<2.4.12

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Apache Sling XSS to a version that resolves this vulnerability.

    Fixed in 2.4.12

Event History

Sep 23, 2026
CVE Published
via MITRE·09:23 AM
Data Sourced
via MITRE·09:23 AM
DescriptionWeakness
Data Sourced
via NVD·10:17 AM
DescriptionSeverityWeakness

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