QSearchQSearch

CVE-2026-8948

9.1 CRITICAL

Same-origin policy bypass in the DOM: Networking component

Published: 2026-05-19 · Last updated: 2026-05-20

Severity and scoring

CVSS
9.1 CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
CWE-942

Affected products

VendorProduct
mozillafirefox, thunderbird

Description

Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-10702 — JIT miscompilation in the JavaScript Engine: JIT component (4.3 MEDIUM)
  • CVE-2026-10701 — Incorrect boundary conditions in the Graphics: Text component (7.5 HIGH)
  • CVE-2026-9309 — Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata (5.4 MEDIUM)
  • CVE-2026-9308 — Firefox for iOS Reader View replaced page content in its HTML template before replacing other internal placeholders (5.4 MEDIUM)
  • CVE-2026-9078 — Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in link preview UI ... (5.4 MEDIUM)

Same CWE

  • CVE-2026-10056 — CORS misconfiguration in the REST API of Network Optix Nx Witness VMS before version 6.1.2, when running in the default Standard security... (7.5 HIGH)
  • CVE-2026-46685 — RustFS is a distributed object storage system built in Rust
  • CVE-2026-45021 — Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs
  • CVE-2026-9739 — Vulnerable to DNS rebinding attacks when using SSE (http://b/499408790)
  • CVE-2026-44895 — GitLab MCP Server lets an AI agent talk directly to GitLab