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Vulnerabilities / CVE-2016-6798

critical

CVE-2016-6798

XML External Entity Reference in Apache Sling

Published Modified CWE 611
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA.

Description

In the XSS Protection API module before 1.0.12 in Apache Sling, the method XSS.getValidXML() uses an insecure SAX parser to validate the input string, which allows for XXE attacks in all scripts which use this method to validate user input, potentially allowing an attacker to read sensitive data on the filesystem, perform same-site-request-forgery (SSRF), port-scanning behind the firewall or DoS the application.

Affected packages and fixed versions

SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.apache.sling:org.apache.sling.xss, org.apache.sling:org.apache.sling.xss.compat1.0.12 and 1 more
Show all 2 entries from 1 source
SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.apache.sling:org.apache.sling.xss1.0.12
maven::GitHub Security Advisory Mavenorg.apache.sling:org.apache.sling.xss.compat1.1.0

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.