Vulnerability details
CVE-2026-115721
Apache Software Foundation Apache Vysper
Apache Vysper: Unbounded allocation
CVSS 3.1
7.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (apache) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache Vysper | All | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-10-26
- Last updated
- 2026-11-03
- State
- Published
- Assigner (CNA)
- apache
Exploit prediction (EPSS)
0.47%
Probability of exploitation in 30 days
41.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-770Allocation of Resources Without Limits or Throttling