REDHAT-BUG-2489212: High severity Mozilla Firefox vulnerability
JIT miscompilation in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefox (Core & HTML)to a version that resolves this vulnerability.Fixed in 152 - Upgrade
Upgrade
Firefox ESR (Core & HTML)to a version that resolves this vulnerability.Fixed in 140.12 - Upgrade
Upgrade
Firefox ESR (Core & HTML)to a version that resolves this vulnerability.Fixed in 115.37
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2489212?
The severity of REDHAT-BUG-2489212 is classified as high with a risk score of 7.
How do I fix REDHAT-BUG-2489212?
To fix REDHAT-BUG-2489212, update to Firefox version 152, Firefox ESR version 140.12, or Firefox ESR version 115.37.
What components are affected by REDHAT-BUG-2489212?
REDHAT-BUG-2489212 specifically affects the DOM in the Core and HTML components of Mozilla Firefox.
Is there a workaround for REDHAT-BUG-2489212?
There is no official workaround for REDHAT-BUG-2489212, and users are advised to upgrade their Firefox version to mitigate the vulnerability.
When was REDHAT-BUG-2489212 published?
REDHAT-BUG-2489212 was published on June 16, 2026.