CVE-2026-115721
Apache Vysper: Unbounded allocation
**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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Apache Vysper Apache Software Foundation org.apache.vysper:vysper
maven |
≥ 0; ≤ * (affected, maven)
Other versions: unaffected |
CNA: apache |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: apache |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://mina.apache.org/vysper-project/CNA: apache
- https://lists.apache.org/thread.html/d0bx15hjcs69gktk9tt25vgvk121c9vmCNA: apache · vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/10/23/20ADP: CVE
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