CVE-2026-8389

⚠️ high

🔍 Scan for this CVE

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.

CVSS Score

8.8

High

EPSS Score

0.1

Exploit Probability

Published Date

2026-05-12

First Seen: 2026-06-06

This CVE is High Risk - more severe than 81.1% of all 325,576 vulnerabilities in our database.

#61,611

Top 25% most severe

Severity Percentile

🔍 Exploitation Status

Poc

Proof-of-concept available

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

ggwhyp

SSVC data provided by CISA

Last Modified 2026-06-05

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-119 CWE-686 CWE-843

📦 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-2026-10701	⚠️ high	7.5	0.0	Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 151.0.3.	2026-06-02
CVE-2026-10702	🔶 medium	4.3	0.0	JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 151.0.3.	2026-06-02
CVE-2026-9308	🔶 medium	5.4	0.0	Firefox for iOS Reader View replaced page content in its HTML template before replacing other internal placeholders. A m...	2026-06-01
CVE-2026-9309	🔶 medium	5.4	0.0	Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup ...	2026-06-01
CVE-2026-9078	🔶 medium	5.4	0.0	Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in...	2026-05-25
CVE-2026-8945	⚠️ high	7.5	0.1	Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.	2026-05-19

These CVEs affect the same products