Bug 2550442 (CVE-2026-109720) - CVE-2026-109720 firefox: JIT miscompilation in the JavaScript: WebAssembly component
Summary: CVE-2026-109720 firefox: JIT miscompilation in the JavaScript: WebAssembly co...
Keywords:
Status: NEW
Alias: CVE-2026-109720
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-13 13:03 UTC by OSIDB Bzimport
Modified: 2026-11-02 02:56 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:89756 0 None None None 2026-10-26 03:28:12 UTC
Red Hat Product Errata RHSA-2026:89757 0 None None None 2026-10-26 04:10:32 UTC
Red Hat Product Errata RHSA-2026:89758 0 None None None 2026-10-26 03:04:08 UTC
Red Hat Product Errata RHSA-2026:93443 0 None None None 2026-11-02 02:56:15 UTC

Description OSIDB Bzimport 2026-10-13 13:03:25 UTC 
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Comment 1 Jon Orris 2026-10-26 03:04:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:89758 https://access.redhat.com/errata/RHSA-2026:89758
Comment 2 Jon Orris 2026-10-26 03:28:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:89756 https://access.redhat.com/errata/RHSA-2026:89756
Comment 3 Jon Orris 2026-10-26 04:10:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:89757 https://access.redhat.com/errata/RHSA-2026:89757
Comment 4 Jon Orris 2026-11-02 02:56:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:93443 https://access.redhat.com/errata/RHSA-2026:93443
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