CVE-2026-1489

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.

This vulnerability is rated Moderate for Red Hat products. A flaw in GLib's Unicode case conversion implementation can lead to memory corruption due to an integer overflow when processing specially crafted and extremely large Unicode strings. Applications that handle untrusted, large Unicode input and utilize GLib for string conversion may be susceptible, potentially resulting in crashes or instability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.