GNOME glib2 GDBusServer denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in GNOME glib2. It has been classified as problematic. This impacts an unknown function of the component GDBusServer. This manipulation causes denial of service. This vulnerability is handled as CVE-2026-15588. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in GNOME glib2 (unknown version). Affected by this vulnerability is an unknown code block of the component GDBusServer. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

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.

It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2026-15588. The exploitation appears to be easy. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 335957 (RHEL 9 : glib2 (RHSA-2026:55440)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (335957) and CERT Bund (WID-SEC-2026-2866). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Red Hat Enterprise Linux

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 335957
Nessus Name: RHEL 9 : glib2 (RHSA-2026:55440)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/16/2026 Advisory disclosed
07/16/2026 +0 days VulDB entry created
08/18/2026 +33 days VulDB entry last update

Sourcesinfo

Vendor: gnome.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2026-15588 (🔒)
GCVE (CVE): GCVE-0-2026-15588
GCVE (VulDB): GCVE-100-379531
CERT Bund: WID-SEC-2026-2866 - Red Hat Enterprise Linux (glib2): Mehrere Schwachstellen

Entryinfo

Created: 07/16/2026 16:31
Updated: 08/18/2026 10:56
Changes: 07/16/2026 16:31 (49), 08/17/2026 21:34 (7), 08/17/2026 22:52 (8), 08/18/2026 10:56 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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