MFSA2026-57: Security Vulnerabilities fixed in Firefox 152
Published Jun 16, 2026
·Updated
Security Vulnerabilities fixed in Firefox 152
Affected Software
1 affected componentFixes available
Mozilla Firefox<152
152
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 152
Event History
Jun 16, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-12289
- CVE-2026-12290
- CVE-2026-12291
- CVE-2026-12292
- CVE-2026-12293
- CVE-2026-12294
- CVE-2026-12295
- CVE-2026-12296
- CVE-2026-12297
- CVE-2026-12298
- CVE-2026-12299
- CVE-2026-12300
- CVE-2026-12301
- CVE-2026-12302
- CVE-2026-12303
- CVE-2026-12304
- CVE-2026-12305
- CVE-2026-12306
- CVE-2026-12307
- CVE-2026-12308
- CVE-2026-12309
- CVE-2026-12310
- CVE-2026-12311
- CVE-2026-12312
- CVE-2026-12313
- CVE-2026-12314
- CVE-2026-12315
- CVE-2026-12316
- CVE-2026-12317
- CVE-2026-12318
- CVE-2026-12319
- CVE-2026-12320
- CVE-2026-12321
- CVE-2026-12322
- CVE-2026-12323
- CVE-2026-12324
- CVE-2026-12325
- CVE-2026-12326
- CVE-2026-12327
- CVE-2026-12328
Frequently Asked Questions
1
What is the severity of MFSA2026-57?
MFSA2026-57 has a high severity rating of 7.
2
How do I fix MFSA2026-57?
To fix MFSA2026-57, update your Mozilla Firefox to version 152 or later.
3
What vulnerabilities are addressed in MFSA2026-57?
MFSA2026-57 addresses multiple security vulnerabilities found in earlier versions of Mozilla Firefox.
4
When was MFSA2026-57 published?
MFSA2026-57 was published on June 16, 2026.
5
Which software is affected by MFSA2026-57?
MFSA2026-57 affects Mozilla Firefox versions prior to 152.