CVE-2026-91852

Medium

Description

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.

SeverityMedium

CVSS6.1

Exploit probability—

Product

Apache Sling Xss Protection Api

PublishedSep 23, 2026

First seenSep 23, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

apache sling_xss_protection_api2.4.12 or later

Vendor advisories

sling.apache.org/news.html
lists.apache.org/thread/nd0ncdk5qb9gqvn0s10rmhnbk887k1qo

Affected products

Product	Affected versions	Fixed in
apache sling_xss_protection_api	v < 2.4.12	2.4.12

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