CVE-2026-115721

HIGH 7.5CVE-2026-115721 · Published 26/10/2026 · updated 02/11/2026

In short

CVE-2026-115721 is a HIGH (CVSS 7.5) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.47%, higher than 41.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

**UNSUPPORTED WHEN ASSIGNED** Unbounded allocation in XML parsing in Apache Vysper; all versions, may lead to an out of memory condition. This issue affects all versions of Apache Vysper. Apache Vysper is an XMPP (Jabber) server library. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.

References

lists.apache.org/thread.html/d0bx15hjcs69gktk9tt25vgvk121c9vm
mina.apache.org/vysper-project
openwall.com/lists/oss-security/2026/10/23/20

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free