early signals oss-security

CVE-2026-115748: Apache Vysper: Authorization bypass

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A security advisory reports an authorization bypass in Apache Vysper, an XMPP server library, affecting all versions and allowing authenticated users to compromise other accounts.

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Posted by Thomas Wolf on Oct 23 Severity: important 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 Affected versions: - Apache Vysper: all versions 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...