CVE-2026-8401
9.8 CRITICALSandbox escape in the Profile Backup component
Published: 2026-05-12 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-693
Affected products
| Vendor | Product |
|---|---|
| mozilla | firefox |
Description
Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8401
- [Other]https://bugzilla.mozilla.org/show_bug.cgi?id=2038679
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-45/
- [Other]https://www.mozilla.org/security/advisories/mfsa2026-47/
- [Other]https://www.mozilla.org/security/advisories/mfsa2026-48/
- [Other]https://www.mozilla.org/security/advisories/mfsa2026-51/
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-2026-12031 — Inappropriate implementation in Views in Google Chrome on Windows prior to 149.0.7827.115 allowed a remote attacker who had compromised t... (8.3 HIGH)
- CVE-2025-30431 — The issue was addressed with improved checks (5.5 MEDIUM)
- CVE-2025-24284 — This issue was addressed with improved checks to prevent unauthorized actions (8.8 HIGH)
- CVE-2026-48546 — KanaDojo before 0.1.18 contains a sandbox escape vulnerability that allows an attacker to execute arbitrary code by exploiting the explic... (7.3 HIGH)
- CVE-2026-50564 — Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes (9.9 CRITICAL)