UBUNTU-CVE-2026-117928: Medium severity ubuntu/mozjs52 vulnerability

Published Oct 27, 2026
·
Updated

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

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.

  1. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 159
  2. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 153.6
  3. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 159
  4. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 153.6

Event History

Oct 27, 2026
CVE Published
via OSV·02:16 PM
Data Sourced
via OSV·02:16 PM
DescriptionSeverityAffected Software

Company

Resources

Contact

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