RLSA-2026:67133

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Source
https://errata.rockylinux.org/RLSA-2026:67133
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:67133.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2026:67133
Upstream
CVE (10)
  • CVE-2026-16365
  • CVE-2026-75874
  • CVE-2026-84119
  • CVE-2026-84120
  • CVE-2026-84121
  • CVE-2026-84122
  • CVE-2026-84124
  • CVE-2026-84131
  • CVE-2026-84143
  • CVE-2026-84145
Published
2026-09-27T06:05:07Z
Modified
2026-09-27T06:30:02Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Important: firefox security update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

  • firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)

  • firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)

  • firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)

  • firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)

  • firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)

  • firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)

  • firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)

  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-84124)

  • firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)

  • firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Database specific 
{
    "license":  "CC-BY-4.0",
    "license_url":  "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory":  "RHSA-2026:67133"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:9 / firefox

Package

Name
firefox
Purl
pkg:rpm/rocky-linux/firefox?distro=rocky-linux-9&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:140.15.0-1.el9_8
Database specific
Show details 
{
    "yum_repository":  "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:67133.json"