CVE-2026-115748

Apache Vysper: Authorization bypass

Apache Software Foundation Apache Vysper

Open in Threatline Record JSON

CVSS

8.8High

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Published26 Oct 2026Updated 26 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

CVE-2026-115748: Apache Vysper: Authorization bypassoss-security, 23 Oct 2026

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.

Text from CVE List

Affected versions 1

Apache Vysperaffected: version unspecifiedCVE List