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CVE-2026-115721

Apache Vysper: Unbounded allocation

HIGH
7.5
CVSS Score
Published: October 26, 2026 at 03:01 PM UTC
Updated: October 26, 2026 at 04:54 PM UTC
1 product affected across 1 vendorApache Vysper

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Apache Vysper· Apache
90%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Source: cverecord
https://mina.apache.org/vysper-project/
Vendor Advisory
Source: cverecord
https://lists.apache.org/thread.html/d0bx15hjcs69gktk9tt25vgvk121c9vm
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/10/23/20

CVSS

7.5HIGHapache
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED

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