GoogleCVE-2026-78954

Google Chrome: improper authorization

Medium4.3CVE-2026-78954 · Published Aug 25, 2026 · updated Aug 28, 2026

Incorrect authorization in Extensions in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

Google advisory

Affected versions

Package	Affected	Fixed in
Chrome Product	>= 152.0.7977.65, < 152.0.7977.65	152.0.7977.65

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-863

More Google advisories

All Google

Date	Advisory	Severity	Fixed in
Aug 25	Improper control of a resource through its lifetime in Workers in Google Chrome... Low3.1Aug 25 CVE-2026-79289152.0.7977.65	Low3.1	152.0.7977.65
Aug 25	Google Chrome: use after free Critical9.6Aug 25 CVE-2026-79290152.0.7977.65	Critical9.6	152.0.7977.65
Aug 25	Google Chrome: information disclosure Medium6.5Aug 25 CVE-2026-79291152.0.7977.65	Medium6.5	152.0.7977.65
Aug 25	Google Chrome: integer overflow High8.3Aug 25 CVE-2026-79292152.0.7977.65	High8.3	152.0.7977.65
Aug 25	Google Chrome: information disclosure Medium6.5Aug 25 CVE-2026-79293152.0.7977.65	Medium6.5	152.0.7977.65
Aug 25	Google Chrome: use after free Critical9.6Aug 25 CVE-2026-79275152.0.7977.65	Critical9.6	152.0.7977.65

Affected versions

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