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CVE-2016-6798
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…
Critical9.8EPSS 3.7%
- Published
- Updated
- Reserved
- Assigned by
- apache
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.7% · top 10% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
Apache Software Foundation · Apache Sling
- affected prior to 1.0.12
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.sling:org.apache.sling.xssGHSA-7g54-vgp6-jj5w (opens in a new tab)
- Mavenorg.apache.sling:org.apache.sling.xss.compatGHSA-7g54-vgp6-jj5w (opens in a new tab)
References (2)
- https://lists.apache.org/thread.html/b72c3a511592ec70729b3ec2d29302b6ce87bbeab62d4745617a6bd0%40%3Cdev.sling.apache.org%3E (opens in a new tab)x_refsource_MISCx_transferred
- 99873 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-7g54-vgp6-jj5w (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .