---
id: CVE-2026-8261
title: A vulnerability was determined in Squirrel up to 3.2
summary: >-
  A vulnerability was determined in Squirrel up to 3.2. This affects the
  function SQFunctionProto::Load of the file squirrel/sqobject.cpp. This
  manipulation causes heap-based buffer overflow. The attack is restricted to
  local execution. Th…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-122
  - CWE-120
published: '2026-05-11'
updated: '2026-07-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8261'
references:
  - url: 'https://github.com/albertodemichelis/squirrel/issues/326'
    label: cna@vuldb.com
  - url: >-
      https://github.com/biniamf/pocs/tree/main/squirrel-sqobject-functionproto-load-intovf-lineinfos
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/809904'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/362558'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/362558/cti'
    label: cna@vuldb.com
  - url: 'https://github.com/albertodemichelis/squirrel/issues/326'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://vuldb.com/submit/809904'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8261.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-8261'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2468988'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-8261'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8261'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00154
epssPercentile: 0.04455
ingestedAt: '2026-07-23T20:19:18.433Z'
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - deployment_validation_operator
  - mcp_server_for_red_hat_openshift
  - multicluster_global_hub
  - openshift_developer_tools_and_services
  - openshift_lightspeed
  - openshift_service_mesh 2
  - openshift_service_mesh 3
  - advanced_cluster_management_for_kubernetes 2
  - advanced_cluster_security 4
  - ceph_storage 6
  - ceph_storage 9
  - openshift_ai_rhoai
  - openshift_container_platform 4
  - openshift_gitops
  - openshift_virtualization 4
  - openstack_platform 16.2
  - openstack_platform 17.1
  - openstack_platform 18.0
  - trusted_artifact_signer
  - trusted_profile_analyzer
scores:
  nvd: 5.9
  vendor: 6.1
---

## Overview

A vulnerability was determined in Squirrel up to 3.2. This affects the function SQFunctionProto::Load of the file squirrel/sqobject.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Deployment Validation Operator, MCP Server for Red Hat OpenShift, Multicluster Global Hub, OpenShift Developer Tools and Services, OpenShift Lightspeed, OpenShift Service Mesh 2, … · no fix planned: Deployment Validation Operator, MCP Server for Red Hat OpenShift, Multicluster Global Hub, OpenShift Developer Tools and Services, … · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8261.json)