CVE-2026-12323

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVSS v3.1

5.4 MEDIUM

EPSS

0.17%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

ScopeUNCHANGED

ConfidentialityLOW

IntegrityNONE

AvailabilityLOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

Connections

3 relationships

Timeline

disclosure → media coverage

Jun 16, 2026

Disclosure — published as a CVE record.