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TI-2026-80452 Aliases CVE-2026-115721GHSA-8jc8-88rj-r6ww

Unbounded allocation in XML parsing in Apache Vysper

Priority LOW 39CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

All versions of Apache Vysper, an XMPP (Jabber) server library, are affected. The XML parser allocates memory without bounds (CWE-770). A remote attacker without privileges or user interaction can exhaust memory, causing an out of memory condition.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

**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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00474 41st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Vysperall versions—No fix listedCNA
  • Apache Vysper VendorApache Affected all versions Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Apache Vysper. The project is retired, and the sources recommend that users find an alternative.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-115721
  2. 2026-10-27 Alias added: GHSA-8jc8-88rj-r6ww
  3. 2026-10-27 Priority changed: MEDIUM → LOW
  4. 2026-11-02 Weakness changed · CISA ADP
  5. 2026-11-02 CISA SSVC decision points changed

References

Advisory 1

Other 1

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

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