Search/CVE-2026-109772
● CVE — Critical

CVE-2026-109772

DiscoveredOct 13, 2026UpdatedOct 26, 2026

Same-origin policy bypass in the DevTools component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

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CVSS v3.1
9.1 CRITICAL
EPSS
0.18%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Oct 27, 2026 → Oct 28, 2026
▲ 0.02pp
0.16% → 0.18% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Connections
1 relationships
Timeline
disclosure → media coverage
Oct 13, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026