CVE-2026-115748 Apache Vysper: Authorization bypass

High 8.8 Published 26 Oct 2026 Updated 26 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-115748?

CVE-2026-115748 is a high-severity vulnerability in Apache Vysper, published on 26 Oct 2026.

Official description

**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.

Weakness: CWE-639

Which versions are affected by CVE-2026-115748?

How do I fix CVE-2026-115748?

No fix has been published for CVE-2026-115748 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-115748 being exploited?

There is no known exploitation of CVE-2026-115748 in the wild and no public exploit code.

Sources

Also known as GHSA-whj5-44p4-m2ff.