CVE-2026-92001 Apache Sling XSS: Missing parser resource limits
Attackers can cause denial of service in Apache Sling XSS by exploiting improper restrictions on recursive XML entity references.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-92001?
CVE-2026-92001 is a medium-severity denial of service vulnerability in Apache Sling XSS, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper restriction of recursive entity references in DTDs ('XML entity expansion') 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.
Weakness: CWE-776
Which versions are affected by CVE-2026-92001?
It affects 1 product.
Products include Apache Sling Xss Protection Api.
How do I fix CVE-2026-92001?
No fix has been published for CVE-2026-92001 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-92001 being exploited?
There is no known exploitation of CVE-2026-92001 in the wild and no public exploit code.
Other vulnerabilities in Apache Sling XSS
- CVE-2026-73192 Apache Sling XSS: XSS possible through XSSAPI.getValidHref()
- CVE-2026-91852 Apache Sling XSS: CWE-79 multiple raw-string break-outs and ReDOS in XSSImpl
- CVE-2026-91928 Apache Sling XSS: Sanitizer bypass, uncontrolled resource consumption and failure pf protection mechanisms
- CVE-2026-91999 Apache Sling XSS: Improper escaping in the XSS Webconsole plugin
- CVE-2017-15717 Cross-site Scripting in Apache Sling XSS Protection API
Sources
Also known as GHSA-pgm8-c5v3-3mcm.