PT-2026-40020 · Mozilla+1 · Firefox+1

Ggwhyp · Published 2026-05-12 · Updated 2026-06-02 · CVE-2026-8388

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3

Description Incorrect boundary conditions exist in the Just-In-Time (JIT) component of the JavaScript Engine. JIT is a compilation method that improves performance by compiling bytecode into native machine code at runtime.

Recommendations Update to version 150.0.3.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALSA-2026:21378

ALSA-2026:21380

ALSA-2026:21381

ALSA-2026:21382

ALSA-2026:22325

ALSA-2026:22643

CVE-2026-8388

OESA-2026-2392

OESA-2026-2393

OESA-2026-2394

OESA-2026-2465

OPENSUSE-SU-2026:10813-1

OPENSUSE-SU-2026:10864-1

RHSA-2026:21378

RHSA-2026:21380

RHSA-2026:21381

RHSA-2026:21382

RHSA-2026:22325

RHSA-2026:22643

Affected Products

Firefox

Rocky Linux

References · 129

• https://nvd.nist.gov/vuln/detail/CVE-2026-8949 · Security Note
• https://osv.dev/vulnerability/ALSA-2026:21381 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:22643 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:21382 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8974 · Security Note
• https://linux.oracle.com/errata/ELSA-2026-21382.html · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-45/#CVE-2026-8388 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:22643 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8959 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10864-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8388 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-8958 · Security Note
• https://errata.rockylinux.org/RLSA-2026:21381 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8950 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-8956 · Security Note