PoC Index

CVE-2026-78903

LOW 3.1EPSS 0.3%

Incomplete cleanup in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3.1
3.1 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS
0.27% chance of exploitation in the next 30 days, 19th percentile
Published
2026-08-25
Updated
2026-08-27

Proof-of-concept exploits (1)

References

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