Overview
What is 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)
CVE intelligence
CVE-2026-78955
Vulnerability intelligence
6.5MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-78955 and is rated Medium severity with a CVSS score of 6.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEVNot listedBased on the latest collected catalog
EPSS0.4%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships