🛡️ CVE-2026-15588 on Debian — glib2.0

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-15588 as tracked by Debian, for the package glib2.0. The fix is available in version 2.88.3-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

DEBIAN-CVE-2026-15588 is classified as CWE-770: Allocation of Resources Without Limits. Resources are allocated on request with no cap, so a client can exhaust them.

Affected software

DEBIAN-CVE-2026-15588 is recorded against 1 package.

glib2.0 (fixed in 2.88.3-1)

Timeline and source

Published on 20 July 2026 and last revised on 10 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-20

Updated 2026-08-12

Modified 2026-08-10

Fix URL N/A

Affected Packages

Software	From version	Fixed in
glib2.0	—	2.88.3-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2026-15588

🔗 NVD 🔗 Mitre

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