RLSA-2026:29940

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Source
https://errata.rockylinux.org/RLSA-2026:29940
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:29940.json
JSON Data
https://api.test.osv.dev/v1/vulns/RLSA-2026:29940
Upstream
  • CVE-2026-12289
  • CVE-2026-12290
  • CVE-2026-12291
  • CVE-2026-12292
  • CVE-2026-12294
  • CVE-2026-12295
  • CVE-2026-12296
  • CVE-2026-12297
  • CVE-2026-12298
  • CVE-2026-12299
  • CVE-2026-12302
  • CVE-2026-12304
  • CVE-2026-12305
  • CVE-2026-12306
  • CVE-2026-12307
  • CVE-2026-12308
  • CVE-2026-12309
  • CVE-2026-12310
  • CVE-2026-12311
  • CVE-2026-12312
  • CVE-2026-12313
  • CVE-2026-12314
  • CVE-2026-12315
  • CVE-2026-12324
  • CVE-2026-12325
  • CVE-2026-12327
  • CVE-2026-12328
  • CVE-2026-12329
  • CVE-2026-12330
Published
2026-06-26T12:03:13.137376Z
Modified
2026-06-26T12:30:07.043443545Z
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: thunderbird security update
Details

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

  • firefox: thunderbird: Sandbox escape in the DOM: Workers component (CVE-2026-12294)

  • firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12313)

  • firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12311)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12290)

  • firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12327)

  • firefox: thunderbird: JIT miscompilation in the DOM: Core & HTML component (CVE-2026-12299)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12329)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12312)

  • firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12302)

  • firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12328)

  • firefox: thunderbird: Incorrect boundary conditions in the Internationalization component (CVE-2026-12330)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12314)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12309)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12310)

  • firefox: thunderbird: Denial-of-service in the Graphics: ImageLib component (CVE-2026-12325)

  • firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-12295)

  • firefox: thunderbird: Privilege escalation in the Graphics: WebRender component (CVE-2026-12289)

  • firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12315)

  • firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component (CVE-2026-12296)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12306)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12307)

  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-12297)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12305)

  • firefox: thunderbird: Incorrect boundary conditions in the Web Audio component (CVE-2026-12292)

  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12308)

  • firefox: thunderbird: Incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-12324)

  • firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-12304)

  • firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-12291)

  • firefox: thunderbird: Memory safety bug fixed in Firefox ESR 140.12 (CVE-2026-12298)

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.

References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:9 / thunderbird

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0:140.12.0-1.el9_8
Database specific 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:29940.json"