CVE-2026-15588

Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering

CVSS 3.1 5.3 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-15588

Published

A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Risk history

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Advisory history

5 saved versions

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6 Nov 2026 08:36:20 UTC