5.3

CVE-2026-15588: glib2.0

CVSS: 5.3v3.1MediumAwaiting analysis
AliasesSUSE-SU-2026:23880-1SUSE-SU-2026:23928-1SUSE-SU-2026:23971-1
Published 20-07-2026Last modified 14-10-2026
Open JSON

Vulnerability summary

CVE-2026-15588 is a medium (CVSS 5.3) vulnerability in glib2.0. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.48%
0%100%
Low · +0.25 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 1
RHSA-2026:55440RHSA-2026:57015RHSA-2026:61766RHSA-2026:65762RHSA-2026:65763RHSA-2026:65767

Timeline

  1. 20-07-2026
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

+0.25 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.48%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse12 products
  • glib2-doc&distro=SUSE Linux Enterprise Server 16.0< 2.84.4-160000.5.1
  • glib2-doc&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 2.84.4-160000.5.1
  • glib2&distro=SUSE Linux Enterprise Micro 5.3< 2.70.5-150400.3.40.1
  • glib2&distro=SUSE Linux Enterprise Micro 5.4< 2.70.5-150400.3.40.1
  • glib2&distro=SUSE Linux Enterprise Micro 5.5< 2.70.5-150400.3.40.1
Redhat5 products
  • glib2< 0:2.89.1-1.1.hum1 | < 0:2.89.1-1.2.hum1 | < 0:2.89.2-2.hum1
  • glib2-devel< 0:2.89.1-1.1.hum1 | < 0:2.89.1-1.2.hum1 | < 0:2.89.2-2.hum1
  • glib2-doc< 0:2.89.1-1.1.hum1 | < 0:2.89.1-1.2.hum1 | < 0:2.89.2-2.hum1
  • glib2-static< 0:2.89.1-1.1.hum1 | < 0:2.89.1-1.2.hum1 | < 0:2.89.2-2.hum1
  • glib2-tests< 0:2.89.1-1.1.hum1 | < 0:2.89.1-1.2.hum1 | < 0:2.89.2-2.hum1
Opensuse3 products
  • glib2-doc&distro=openSUSE Leap 16.0< 2.84.4-160000.5.1
  • glib2&distro=openSUSE Leap 16.0< 2.84.4-160000.5.1
  • glib2&distro=openSUSE Tumbleweed< 2.88.3-1.1
Debian1 product
  • glib2.0All versions (No fix recorded) | < 2.84.4-3~deb13u4 | < 2.88.3-1
Ubuntu1 product
  • glib2.0< 2.40.2-0ubuntu1.1+esm8 | < 2.48.2-0ubuntu4.8+esm6 | < 2.56.4-0ubuntu0.18.04.9+esm6 | < 2.64.6-1~ubuntu20.04.9+esm2 | < 2.72.4-0ubuntu2.10 | < 2.80.0-6ubuntu3.9 | < 2.88.0-1ubuntu0.1

5 vendors · 22 products

References

100 links
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