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CVE Vulnerability Details :
CVE-2026-2803
PUBLISHED
More InfoOfficial Page
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
View Known Exploited Vulnerability (KEV) details
Published At-24 Feb, 2026 | 13:33
Updated At-26 Feb, 2026 | 20:01
Rejected At-
▼CVE Numbering Authority (CNA)
Information disclosure, mitigation bypass in the Settings UI component

Information disclosure, mitigation bypass in the Settings UI component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Affected
  • From unspecified before 148 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 148 (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Skywarp
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2012012
N/A
https://www.mozilla.org/security/advisories/mfsa2026-13/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-16/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2012012
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-13/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-16/
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-200CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWECWE-693CWE-693 Protection Mechanism Failure
Type: CWE
CWE ID: CWE-200
Description: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Type: CWE
CWE ID: CWE-693
Description: CWE-693 Protection Mechanism Failure
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found