CVE-2026-115721

Apache Vysper: Unbounded allocation

Published Oct 26, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-789
Type Values Removed Values Added
Weaknesses CWE-770
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache vysper
Vendors & Products Apache
Apache vysper
Type Values Removed Values Added
Weaknesses CWE-789
Type Values Removed Values Added
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.
Title Apache Vysper: Unbounded allocation
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Nov 2, 2026, 9:21 PM
Reserved
Oct 23, 2026, 11:19 AM
Status
Deferred
Published
Oct 26, 2026, 4:17 PM
Modified
Nov 2, 2026, 10:17 PM