CVE-2026-78955

Observable discrepancy in PerformanceAPIs in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

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CVSS v3.1

6.5 MEDIUM

EPSS

0.44%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Intelligence Reports1

1 intelligence report available

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EPSS Trend

Aug 27, 2026 → Sep 2, 2026

▲ 0.07pp

0.37% → 0.44% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityNONE

AvailabilityNONE

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

Connections

2 relationships

CWE-203

source

Timeline

disclosure → media coverage

Aug 25, 2026

Disclosure — published as a CVE record.