CVE-2026-115748
Apache Vysper: Authorization bypass
UNSUPPORTED WHEN ASSIGNED Authorization bypass in Apache Vysper, all versions.
Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Apache Vysper: Authorization bypass
UNSUPPORTED WHEN ASSIGNED Authorization bypass in Apache Vysper, all versions.
Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.
- Record
CVE-2026-115748- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-639
- Updated
- 2026-11-03
EUVDEUVD-2026-109916
UNSUPPORTED WHEN ASSIGNED Authorization bypass in Apache Vysper, all versions.
Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.
- Record
EUVD-2026-109916- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-whj5-44p4-m2ff
**UNSUPPORTED WHEN ASSIGNED** Authorization bypass in Apache Vysper, all versions. Apache...
UNSUPPORTED WHEN ASSIGNED Authorization bypass in Apache Vysper, all versions.
Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.
- Record
GHSA-whj5-44p4-m2ff- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-639
- Updated
- 2026-11-02
NVD
UNSUPPORTED WHEN ASSIGNED Authorization bypass in Apache Vysper, all versions.
Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts.
As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.
- Record
CVE-2026-115748- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-639
- Updated
- 2026-11-03
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-115748 is a high vulnerability (CVSS 8.8) in Apache Software Foundation Vysper, published October 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.61%, the 49th percentile. No source names a fixed version.