MFSA2026-69: Security Vulnerabilities fixed in Firefox ESR 115.38
Published Jul 21, 2026
·Updated
Security Vulnerabilities fixed in Firefox ESR 115.38
Affected Software
1 affected componentFixes available
Mozilla Firefox ESR<115.38
115.38
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 115.38 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 115.38
Event History
Jul 21, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
1
What is the severity of MFSA2026-69?
The severity of MFSA2026-69 is rated as critical with a score of 9.
2
How do I fix MFSA2026-69?
To fix MFSA2026-69, update your Mozilla Firefox ESR to version 115.38.
3
What are the main vulnerabilities addressed by MFSA2026-69?
MFSA2026-69 addresses multiple security vulnerabilities found in Mozilla Firefox ESR.
4
When was MFSA2026-69 published?
MFSA2026-69 was published on July 21, 2026.
5
What product is affected by MFSA2026-69?
MFSA2026-69 affects Mozilla Firefox ESR.