CVE-2026-78956

Chromium: CVE-2026-78956 Type confusion in V8

CVE-2026-78956 is fixed in 9 products on 3 platforms, first by Google Chrome Dev (EXE) 153.0.7979.3, released July 31, 2026. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 3 platforms

CVSS

8.8

high

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0045

39th 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)	152.0.7977.65	Google Chrome (EXE) 152.0.7977.65	Aug 25, 2026
Google Chrome Beta (EXE)	153.0.8010.5	Google Chrome Beta (EXE) 153.0.8010.5	Aug 20, 2026
Google Chrome Dev (EXE)	153.0.7979.3	Google Chrome Dev (EXE) 153.0.7979.3	Jul 31, 2026
Microsoft Edge	152.0.4191.66	Microsoft Edge 152.0.4191.66	Sep 4, 2026
Microsoft Edge Beta	153.0.4234.6	Microsoft Edge Beta 153.0.4234.6	Aug 27, 2026
Microsoft Edge Dev	153.0.4224.0	Microsoft Edge Dev 153.0.4224.0	Aug 17, 2026
Microsoft Edge WebView2 Runtime	152.0.4191.53	Microsoft Edge WebView2 Runtime 152.0.4191.53	Aug 28, 2026
macOS
Google Chrome	152.0.7977.65	Google Chrome 152.0.7977.65	Aug 24, 2026
Microsoft Edge	152.0.4191.53	Microsoft Edge 152.0.4191.53	Aug 27, 2026
Linux
chromium · Debian 12.15 (bookworm)	152.0.7977.75-1~deb12u1	DEBIAN-CVE-2026-78956	Sep 4, 2026
chromium · Debian 13.5 (trixie)	152.0.7977.75-1~deb13u1	DEBIAN-CVE-2026-78956	Sep 4, 2026
chromium · Debian 14	152.0.7977.64-1	DEBIAN-CVE-2026-78956	Sep 4, 2026
chromium · opensuse-leap 16.0	152.0.7977.82-bp160.1.1	OPENSUSE-SU-2026:21799-1	Nov 7, 2026

Details

Published
August 25, 2026
Weakness
CWE-843: Type confusion
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78956

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2026-78956">CVE-2026-78956 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.