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Security Vulnerabilities fixed in Firefox 150.0.3 — Mozilla Mozilla Foundation Security Advisory 2026-45

Created on 2026-05-13 06:44, updated on 2026-05-13 06:44, by Alexandre Dulaunoy
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Description

Security Vulnerabilities fixed in Firefox 150.0.3 — Mozilla

Mozilla Foundation Security Advisory 2026-45

Announced

May 12, 2026

Impact

high

Products

Firefox

Fixed in

  • Firefox 150.0.3

#CVE-2026-8388: Incorrect boundary conditions in the JavaScript Engine: JIT component

Reporter

ggwhyp

Impact

high

References

#CVE-2026-8389: JIT miscompilation in the JavaScript Engine: JIT component

Reporter

ggwhyp

Impact

high

References

#CVE-2026-8390: Use-after-free in the JavaScript: WebAssembly component

Reporter

OpenAI Preparedness, Bill Demirkapi

Impact

high

References

#CVE-2026-8391: Other issue in the JavaScript Engine component

Reporter

ggwhyp

Impact

high

References

#CVE-2026-8401: Sandbox escape in the Profile Backup component

Reporter

ggwhyp

Impact

high

References
Vulnerabilities included in this bundle
Combined detection rules

Detection rules are retrieved from Rulezet.

Combined sightings
Sightings 29 total Seen: 29
Author Vulnerability Source Type Date