MFSA2026-120: Security Vulnerabilities fixed in Firefox ESR 153.6
Published Oct 27, 2026
·Updated
Security Vulnerabilities fixed in Firefox ESR 153.6
Affected Software
1 affected componentFixes available
Mozilla Firefox ESR<153.6
153.6
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 153.6 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 153.6
Event History
Oct 27, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-117860
- CVE-2026-117861
- CVE-2026-117862
- CVE-2026-117863
- CVE-2026-117864
- CVE-2026-117865
- CVE-2026-117866
- CVE-2026-117867
- CVE-2026-117868
- CVE-2026-117869
- CVE-2026-117870
- CVE-2026-117871
- CVE-2026-117872
- CVE-2026-117873
- CVE-2026-117874
- CVE-2026-117875
- CVE-2026-117876
- CVE-2026-117877
- CVE-2026-117878
- CVE-2026-117879
- CVE-2026-117880
- CVE-2026-117881
- CVE-2026-117882
- CVE-2026-117883
- CVE-2026-117884
- CVE-2026-117885
- CVE-2026-117886
- CVE-2026-117887
- CVE-2026-117888
- CVE-2026-117889
- CVE-2026-117890
- CVE-2026-117891
- CVE-2026-117892
- CVE-2026-117893
- CVE-2026-117894
- CVE-2026-117895
- CVE-2026-117896
- CVE-2026-117897
- CVE-2026-117898
- CVE-2026-117899
- CVE-2026-117900
- CVE-2026-117901
- CVE-2026-117902
- CVE-2026-117903
- CVE-2026-117904
- CVE-2026-117905
- CVE-2026-117906
- CVE-2026-117907
- CVE-2026-117908
- CVE-2026-117909
- CVE-2026-117910
- CVE-2026-117911
- CVE-2026-117912
- CVE-2026-117913
- CVE-2026-117914
- CVE-2026-117915
- CVE-2026-117916
- CVE-2026-117917
- CVE-2026-117918
- CVE-2026-117919
- CVE-2026-117920
- CVE-2026-117921
- CVE-2026-117922
- CVE-2026-117923
- CVE-2026-117924
- CVE-2026-117925
- CVE-2026-117926
- CVE-2026-117927
- CVE-2026-117928
- CVE-2026-117929
- CVE-2026-117930
- CVE-2026-117931
- CVE-2026-117932
- CVE-2026-117933
- CVE-2026-117934
- CVE-2026-117935
- CVE-2026-117936
- CVE-2026-117937
- CVE-2026-117938
- CVE-2026-117939
- CVE-2026-117940
- CVE-2026-117941
- CVE-2026-117942
- CVE-2026-117943
- CVE-2026-117944
- CVE-2026-117945
- CVE-2026-117946
- CVE-2026-117947
- CVE-2026-117948
- CVE-2026-117949
- CVE-2026-117950
- CVE-2026-117951
- CVE-2026-117952
- CVE-2026-117953
- CVE-2026-117954
- CVE-2026-117955
- CVE-2026-100801
- CVE-2026-117956
- CVE-2026-117957
- CVE-2026-117958
- CVE-2026-117959
- CVE-2026-117960
- CVE-2026-117961
- CVE-2026-117962
- CVE-2026-117963
- CVE-2026-117964
- CVE-2026-117965
- CVE-2026-117966
- CVE-2026-117967
- CVE-2026-117968
- CVE-2026-117969
- CVE-2026-117970
- CVE-2026-117971
- CVE-2026-117972
- CVE-2026-117973
- CVE-2026-117974
- CVE-2026-117975
- CVE-2026-117976
- CVE-2026-117977
- CVE-2026-117978
- CVE-2026-117979
- CVE-2026-117980
- CVE-2026-117981
- CVE-2026-117982
- CVE-2026-117983
- CVE-2026-117984
- CVE-2026-117985
- CVE-2026-117986
- CVE-2026-117987
- CVE-2026-117988
- CVE-2026-117989
- CVE-2026-117990
- CVE-2026-117991
- CVE-2026-117992
- CVE-2026-117993
- CVE-2026-117994
- CVE-2026-117995
- CVE-2026-117996
- CVE-2026-117997
- CVE-2026-117998
- CVE-2026-117999
- CVE-2026-118000
- CVE-2026-118002
- CVE-2026-118003
- CVE-2026-118004
Frequently Asked Questions
1
When was this advisory published and last modified?
It was published on 2026-10-27 and was last modified on the same date.
2
What severity is assigned to this advisory?
The supplied record rates it as high severity, with a severity value of 7 and a risk value of 33.