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Message-ID: <4a5ae274-7a73-7b8f-d205-c0613f4766ff@apache.org>
Date: Fri, 23 Oct 2026 13:14:04 +0000
From: Thomas Wolf <twolf@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-115721: Apache Vysper: Unbounded allocation
Severity: moderate
CVSS 3.1: 7.5 (high) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected versions:
- Apache Vysper: all versions
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.
Credit:
Gjoko Krstic (Zero Science Lab) (finder)
References:
https://mina.apache.org/vysper-project/
https://mina.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-115721
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