UBUNTU-CVE-2026-118016: Use After Free
Published Oct 27, 2026
·Updated
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.
Affected Software
10 affected components
ubuntu/mozjs52*
ubuntu/mozjs38*
ubuntu/mozjs68*
ubuntu/mozjs52*
ubuntu/mozjs102*
ubuntu/mozjs78*
ubuntu/mozjs91*
ubuntu/thunderbird*
ubuntu/mozjs102*
ubuntu/mozjs115*
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 159 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 159
Event History
Oct 27, 2026
CVE Published
via OSV·02:16 PM
Data Sourced
via OSV·02:16 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which upstream releases include the fix?
The vulnerability was fixed in Firefox 159 and Thunderbird 159.
2
Which Ubuntu software packages are associated with this issue?
The listed Ubuntu packages are mozjs38, mozjs52, mozjs68, mozjs78, mozjs91, mozjs102, mozjs115, and thunderbird.