CVE-2026-17954

Chromium: CVE-2026-17954 Policy bypass in MHTML

CVE-2026-17954 is fixed in 9 products on 3 platforms, first by Google Chrome Dev (EXE) 152.0.7928.2, released July 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

RoutineFixed on 3 platforms

CVSS

4.3

medium

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0020

10th percentile

<p>This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/2026">Google Chrome Releases</a> for more information.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Google Chrome (EXE)	151.0.7922.72	Google Chrome (EXE) 151.0.7922.72	Jul 29, 2026
Google Chrome Beta (EXE)	152.0.7977.8	Google Chrome Beta (EXE) 152.0.7977.8	Jul 30, 2026
Google Chrome Dev (EXE)	152.0.7928.2	Google Chrome Dev (EXE) 152.0.7928.2	Jul 3, 2026
Microsoft Edge	151.0.4129.59	Microsoft Edge 151.0.4129.59	Jul 31, 2026
Microsoft Edge Beta	151.0.4129.59	Microsoft Edge Beta 151.0.4129.59	Jul 31, 2026
Microsoft Edge Dev	152.0.4167.0	Microsoft Edge Dev 152.0.4167.0	Jul 20, 2026
Microsoft Edge WebView2 Runtime	151.0.4129.59	Microsoft Edge WebView2 Runtime 151.0.4129.59	Jul 31, 2026
macOS
Google Chrome	151.0.7922.72	Google Chrome 151.0.7922.72	Jul 28, 2026
Microsoft Edge	151.0.4129.59	Microsoft Edge 151.0.4129.59	Jul 31, 2026
Linux
chromium · Debian 12.15 (bookworm)	151.0.7922.71-1~deb12u1	DEBIAN-CVE-2026-17954	Aug 1, 2026
chromium · Debian 13.5 (trixie)	151.0.7922.71-1~deb13u1	DEBIAN-CVE-2026-17954	Aug 1, 2026
chromium · Debian 14	151.0.7922.71-1	DEBIAN-CVE-2026-17954	Aug 1, 2026
chromium · opensuse-leap 16.0	151.0.7922.173-bp160.1.1	OPENSUSE-SU-2026:21624-1	Nov 7, 2026

Details

Published
July 30, 2026
Weakness
CWE-346: Origin Validation Error
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-17954

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