PT-2026-40023

CVE-2026-8391

·

Published

2026-05-12

·

Updated

2026-06-29

Description by

CVSS 3.1
9.8
Critical
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3
Description An issue exists within the JavaScript Engine component.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-79: Improper Neutralization of Input During Web Page Generation (\'Cross-site Scripting\')
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-475: Undefined Behavior for Input to API
CWE-20: Improper Input Validation
Related identifiers
CVE-2026-8391
BDU:2026-12883
ALSA-2026:21378
ALSA-2026:21380
ALSA-2026:21381
ALSA-2026:21382
ALSA-2026:22325
ALSA-2026:22643
OESA-2026-2392
OESA-2026-2393
OESA-2026-2394
OESA-2026-2465
OESA-2026-2756
OPENSUSE-SU-2026:10813-1
OPENSUSE-SU-2026:10864-1
OPENSUSE-SU-2026:21168-1
RHSA-2026:26174
RHSA-2026:26268
RHSA-2026:26269
RHSA-2026:26270
RHSA-2026:26491
RHSA-2026:26492
RHSA-2026:26493
RHSA-2026:26521
RHSA-2026:26536
RHSA-2026:26539
RHSA-2026:26551
RHSA-2026:26606
RHSA-2026:26629
RHSA-2026:26630
RHSA-2026:27715
Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com