MFSA2026-68: Security Vulnerabilities fixed in Firefox 153
Published Jul 21, 2026
·Updated
Security Vulnerabilities fixed in Firefox 153
Affected Software
1 affected componentFixes available
Mozilla Firefox<153
153
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 153
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.
- CVE-2026-16349
- CVE-2026-16350
- CVE-2026-16362
- CVE-2026-16351
- CVE-2026-16352
- CVE-2026-16363
- CVE-2026-16364
- CVE-2026-16365
- CVE-2026-16366
- CVE-2026-16353
- CVE-2026-16354
- CVE-2026-16367
- CVE-2026-16368
- CVE-2026-16369
- CVE-2026-16355
- CVE-2026-16356
- CVE-2026-16357
- CVE-2026-16370
- CVE-2026-16371
- CVE-2026-16372
- CVE-2026-16373
- CVE-2026-16374
- CVE-2026-16375
- CVE-2026-16376
- CVE-2026-16377
- CVE-2026-16378
- CVE-2026-16379
- CVE-2026-16358
- CVE-2026-16380
- CVE-2026-16381
- CVE-2026-16382
- CVE-2026-16383
- CVE-2026-16384
- CVE-2026-16385
- CVE-2026-16386
- CVE-2026-16387
- CVE-2026-16388
- CVE-2026-16389
- CVE-2026-16390
- CVE-2026-16391
- CVE-2026-16392
- CVE-2026-16393
- CVE-2026-16359
- CVE-2026-16394
- CVE-2026-16395
- CVE-2026-16396
- CVE-2026-16397
- CVE-2026-16398
- CVE-2026-16399
- CVE-2026-16400
- CVE-2026-16401
- CVE-2026-16402
- CVE-2026-16403
- CVE-2026-16404
- CVE-2026-16405
- CVE-2026-16406
- CVE-2026-16407
- CVE-2026-16408
- CVE-2026-16409
- CVE-2026-16410
- CVE-2026-16411
- CVE-2026-16412
- CVE-2026-16360
Frequently Asked Questions
1
What is the severity of MFSA2026-68?
The severity of MFSA2026-68 is classified as high with a score of 7.
2
How do I fix MFSA2026-68?
To fix MFSA2026-68, update your Mozilla Firefox to version 153 or later.
3
What vulnerabilities are addressed in MFSA2026-68?
MFSA2026-68 addresses multiple security vulnerabilities that were identified in previous versions of Firefox.
4
When was MFSA2026-68 published?
MFSA2026-68 was published on July 21, 2026.
5
Which software is affected by MFSA2026-68?
The affected software for MFSA2026-68 is Mozilla Firefox.