CVE-2026-15588

medium

Description

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.

References

https://access.redhat.com/errata/RHSA-2026:82888

https://access.redhat.com/errata/RHSA-2026:82857

https://access.redhat.com/errata/RHSA-2026:82415

https://access.redhat.com/errata/RHSA-2026:82372

https://access.redhat.com/errata/RHSA-2026:82371

https://access.redhat.com/errata/RHSA-2026:82368

https://access.redhat.com/errata/RHSA-2026:82354

https://access.redhat.com/errata/RHSA-2026:82347

https://access.redhat.com/errata/RHSA-2026:82336

https://access.redhat.com/errata/RHSA-2026:82322

https://access.redhat.com/errata/RHSA-2026:82304

https://access.redhat.com/errata/RHSA-2026:82066

https://access.redhat.com/errata/RHSA-2026:82061

https://access.redhat.com/errata/RHSA-2026:82059

https://access.redhat.com/errata/RHSA-2026:80771

https://access.redhat.com/errata/RHSA-2026:80769

https://access.redhat.com/errata/RHSA-2026:76042

https://access.redhat.com/errata/RHSA-2026:75660

https://access.redhat.com/errata/RHSA-2026:75659

https://access.redhat.com/errata/RHSA-2026:75658

https://access.redhat.com/errata/RHSA-2026:75657

https://access.redhat.com/errata/RHSA-2026:75655

https://access.redhat.com/errata/RHSA-2026:75654

https://access.redhat.com/errata/RHSA-2026:75652

https://access.redhat.com/errata/RHSA-2026:74771

https://access.redhat.com/errata/RHSA-2026:74688

https://access.redhat.com/errata/RHSA-2026:74687

https://access.redhat.com/errata/RHSA-2026:74685

https://access.redhat.com/errata/RHSA-2026:74683

https://access.redhat.com/errata/RHSA-2026:74681

https://access.redhat.com/errata/RHSA-2026:74679

https://access.redhat.com/errata/RHSA-2026:74678

https://access.redhat.com/errata/RHSA-2026:74677

https://access.redhat.com/errata/RHSA-2026:74674

https://access.redhat.com/errata/RHSA-2026:74463

https://access.redhat.com/errata/RHSA-2026:74462

https://access.redhat.com/errata/RHSA-2026:74461

https://access.redhat.com/errata/RHSA-2026:74460

https://access.redhat.com/errata/RHSA-2026:74459

https://access.redhat.com/errata/RHSA-2026:74458

https://access.redhat.com/errata/RHSA-2026:73962

https://access.redhat.com/errata/RHSA-2026:73961

https://access.redhat.com/errata/RHSA-2026:73960

https://access.redhat.com/errata/RHSA-2026:73959

https://access.redhat.com/errata/RHSA-2026:73930

https://access.redhat.com/errata/RHSA-2026:73929

https://access.redhat.com/errata/RHSA-2026:73909

https://access.redhat.com/errata/RHSA-2026:73859

https://access.redhat.com/errata/RHSA-2026:72502

https://access.redhat.com/errata/RHSA-2026:72476

https://access.redhat.com/errata/RHSA-2026:72475

https://access.redhat.com/errata/RHSA-2026:72470

https://access.redhat.com/errata/RHSA-2026:72399

https://access.redhat.com/errata/RHSA-2026:72395

https://access.redhat.com/errata/RHSA-2026:72394

https://access.redhat.com/errata/RHSA-2026:66018

https://access.redhat.com/errata/RHSA-2026:65773

https://access.redhat.com/errata/RHSA-2026:65771

https://access.redhat.com/errata/RHSA-2026:65770

https://access.redhat.com/errata/RHSA-2026:65769

https://access.redhat.com/errata/RHSA-2026:65768

https://access.redhat.com/errata/RHSA-2026:65767

https://access.redhat.com/errata/RHSA-2026:65763

https://access.redhat.com/errata/RHSA-2026:65762

https://access.redhat.com/errata/RHSA-2026:63140

https://access.redhat.com/errata/RHSA-2026:63138

https://access.redhat.com/errata/RHSA-2026:63135

https://access.redhat.com/errata/RHSA-2026:61783

https://access.redhat.com/errata/RHSA-2026:61766

https://access.redhat.com/errata/RHSA-2026:58981

https://access.redhat.com/errata/RHSA-2026:57015

https://access.redhat.com/errata/RHSA-2026:55440

https://access.redhat.com/errata/RHSA-2026:42329

https://access.redhat.com/errata/RHSA-2026:40485

https://access.redhat.com/errata/RHSA-2026:39985

Details

Source: Mitre, NVD

Published: 2026-07-20

Updated: 2026-10-14

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Severity: Medium

EPSS

EPSS: 0.00479