---
id: CVE-2026-1489
title: 'Glib: glib: memory corruption via integer overflow in unicode case conversion'
summary: >-
  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 un…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-787
vendor: Red Hat
product: bootc
affected:
  - bootc (all versions)
  - glib2 (all versions)
  - glycin-loaders (all versions)
  - loupe (all versions)
  - mingw-glib2 (all versions)
  - papers (all versions)
  - rpm-ostree (all versions)
  - glib2 (all versions)
  - glib2 (all versions)
  - glib2 (all versions)
  - librsvg2 (all versions)
  - mingw-glib2 (all versions)
  - bootc (all versions)
  - glib2 (all versions)
  - librsvg2 (all versions)
  - mingw-glib2 (all versions)
  - rhoai/odh-ai-gateway-operator-rhel9
  - rhoai/odh-core-bff-rhel9
  - rhoai/odh-dashboard-operator-rhel9
  - rhoai/odh-dashboard-rhel9
  - rhoai/odh-data-science-pipelines-operator-controller-rhel9
  - rhoai/odh-kf-notebook-controller-rhel9
  - rhoai/odh-kserve-controller-rhel9
  - rhoai/odh-kserve-llmisvc-controller-rhel9
  - rhoai/odh-kserve-module-operator-rhel9
  - rhoai/odh-kuberay-operator-controller-rhel9
  - rhoai/odh-kube-rbac-proxy-rhel9
  - rhoai/odh-llama-stack-k8s-operator-rhel9
  - rhoai/odh-maas-controller-rhel9
  - rhoai/odh-mlflow-operator-rhel9
  - rhoai/odh-mlflow-rhel9
  - rhoai/odh-mod-arch-agent-ops-rhel9
  - rhoai/odh-mod-arch-automl-rhel9
  - rhoai/odh-mod-arch-autorag-rhel9
  - rhoai/odh-mod-arch-eval-hub-rhel9
  - rhoai/odh-mod-arch-gen-ai-rhel9
  - rhoai/odh-mod-arch-maas-rhel9
  - rhoai/odh-mod-arch-mlflow-rhel9
  - rhoai/odh-mod-arch-model-registry-rhel9
  - rhoai/odh-model-controller-rhel9
  - rhoai/odh-model-registry-operator-rhel9
  - rhoai/odh-model-serving-api-rhel9
  - rhoai/odh-notebook-controller-rhel9
  - rhoai/odh-ogx-k8s-operator-rhel9
  - rhoai/odh-ogx-module-operator-rhel9
  - rhoai/odh-training-operator-rhel9
  - rhoai/odh-trustyai-service-operator-rhel9
  - rhoai/odh-workbenches-operator-rhel9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-01-27T15:09:00.703183Z'
published: '2026-01-27'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T07:51:43.221Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-1489'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-1489'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2433348'
    label: RHBZ#2433348
  - url: 'https://gitlab.gnome.org/GNOME/glib/-/issues/3872'
tags:
  - cve.org
epss: 0.00366
epssPercentile: 0.30625
ingestedAt: '2026-11-05T22:38:31.375Z'
---

## Overview

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.

## Affected

- `bootc (all versions)`
- `glib2 (all versions)`
- `glycin-loaders (all versions)`
- `loupe (all versions)`
- `mingw-glib2 (all versions)`
- `papers (all versions)`
- `rpm-ostree (all versions)`
- `glib2 (all versions)`
- `glib2 (all versions)`
- `glib2 (all versions)`
- `librsvg2 (all versions)`
- `mingw-glib2 (all versions)`
- `bootc (all versions)`
- `glib2 (all versions)`
- `librsvg2 (all versions)`
- `mingw-glib2 (all versions)`
- `rhoai/odh-ai-gateway-operator-rhel9`
- `rhoai/odh-core-bff-rhel9`
- `rhoai/odh-dashboard-operator-rhel9`
- `rhoai/odh-dashboard-rhel9`
- `rhoai/odh-data-science-pipelines-operator-controller-rhel9`
- `rhoai/odh-kf-notebook-controller-rhel9`
- `rhoai/odh-kserve-controller-rhel9`
- `rhoai/odh-kserve-llmisvc-controller-rhel9`
- `rhoai/odh-kserve-module-operator-rhel9`
- `rhoai/odh-kuberay-operator-controller-rhel9`
- `rhoai/odh-kube-rbac-proxy-rhel9`
- `rhoai/odh-llama-stack-k8s-operator-rhel9`
- `rhoai/odh-maas-controller-rhel9`
- `rhoai/odh-mlflow-operator-rhel9`
- `rhoai/odh-mlflow-rhel9`
- `rhoai/odh-mod-arch-agent-ops-rhel9`
- `rhoai/odh-mod-arch-automl-rhel9`
- `rhoai/odh-mod-arch-autorag-rhel9`
- `rhoai/odh-mod-arch-eval-hub-rhel9`
- `rhoai/odh-mod-arch-gen-ai-rhel9`
- `rhoai/odh-mod-arch-maas-rhel9`
- `rhoai/odh-mod-arch-mlflow-rhel9`
- `rhoai/odh-mod-arch-model-registry-rhel9`
- `rhoai/odh-model-controller-rhel9`
- `rhoai/odh-model-registry-operator-rhel9`
- `rhoai/odh-model-serving-api-rhel9`
- `rhoai/odh-notebook-controller-rhel9`
- `rhoai/odh-ogx-k8s-operator-rhel9`
- `rhoai/odh-ogx-module-operator-rhel9`
- `rhoai/odh-training-operator-rhel9`
- `rhoai/odh-trustyai-service-operator-rhel9`
- `rhoai/odh-workbenches-operator-rhel9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

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.