CVE-2026-8390

⚠️ high

🔍 Scan for this CVE

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

CVSS Score

7.3

High

EPSS Score

0.0

Exploit Probability

Published Date

2026-05-12

First Seen: 2026-05-17

This CVE is Moderate Risk - more severe than 55.6% of all 321,361 vulnerabilities in our database.

#142,783

Above average severity

Severity Percentile

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

OpenAI Preparedness, Bill Demirkapi

SSVC data provided by CISA

Last Modified 2026-05-14

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE IDs (Weakness Types)

CWE-416

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
mozilla	firefox	Affected	< 150.0.3

Permissions Required

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-8401	⛔ critical	9.8	0.1	Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3.	2026-05-12
CVE-2026-8090	⚠️ high	7.3	0.0	Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, ...	2026-05-07
CVE-2026-8091	⛔ critical	9.8	0.0	Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thund...	2026-05-07
CVE-2026-8092	⚠️ high	8.1	0.0	Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed ...	2026-05-07
CVE-2026-8093	⚠️ high	8.1	0.0	Memory safety bugs present in Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume th...	2026-05-07
CVE-2026-8094	⛔ critical	9.8	0.0	Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.	2026-05-07

These CVEs affect the same products