CVE-2026-1489 MEDIUM

CVE-2026-1489: Glib: glib: memory corruption via integer overflow in unicode case conversion

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-787
Published January 27, 2026
Last update June 2, 2026

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could cause applications utilizing GLib for string conversion to crash or become unstable.

Key dates

02Disclosure timeline

January 27, 2026 CVE published
June 2, 2026 Record updated