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Vulnerability record · CVE-2016-5394 · published 19 July 2017

CVE-2016-5394: Apache sling cross-site scripting vulnerability

Apache · Sling

In the XSS Protection API module before 1.0.12 in Apache Sling, the encoding done by the XSSAPI.encodeForJSString() method is not restrictive enough and for some input patterns allows script tags to pass through unencoded, leading to potential XSS vulnerabilities.

6.1 CVSS 3.1 Medium EPSS 2.6% · top 15.2% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In the XSS Protection API module before 1.0.12 in Apache Sling, the encoding done by the XSSAPI.encodeForJSString() method is not restrictive enough and for some input patterns allows script tags to pass through unencoded, leading to potential XSS vulnerabilities.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/99870 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/332166037a54b97cf41e2b616aaed38439de94b19b204841478e4525%40%3Cdev.sling.apache.org%
http://www.securityfocus.com/bid/99870 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/332166037a54b97cf41e2b616aaed38439de94b19b204841478e4525%40%3Cdev.sling.apache.org%

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-5394), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.