UBUNTU-CVE-2026-124901: Medium severity ubuntu/mozjs52 vulnerability

Published Nov 12, 2026

Updated

Other issue in the Networking: JAR component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

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 Firefox to a version that resolves this vulnerability.
Fixed in 160
Upgrade
Upgrade Firefox ESR 115 to a version that resolves this vulnerability.
Fixed in 115.45
Upgrade
Upgrade Firefox ESR 153 to a version that resolves this vulnerability.
Fixed in 153.7
Upgrade
Upgrade Thunderbird to a version that resolves this vulnerability.
Fixed in 160
Upgrade
Upgrade Thunderbird 153 to a version that resolves this vulnerability.
Fixed in 153.7

Event History

Nov 12, 2026

CVE Published

via OSV·12:00 AM

Data Sourced

via OSV·12:00 AM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which Ubuntu software packages should be reviewed for this issue?

Review installations using ubuntu/mozjs38, ubuntu/mozjs52, ubuntu/mozjs68, ubuntu/mozjs78, ubuntu/mozjs91, ubuntu/mozjs102, ubuntu/mozjs115, or ubuntu/thunderbird.

Which upstream releases contain the fix?

The issue was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

Can the Ubuntu package versions that include the fix be determined from this information?

No. The provided information identifies affected Ubuntu package names but does not provide Ubuntu package revision numbers or fixed Ubuntu release versions.