CVE-2026-78943: Improper input validation in Google Chrome
Description
CVE-2026-78943 is a medium-severity vulnerability in Google Chrome prior to version 152.0.7977.65 involving improper input validation in the Editing component. This flaw could allow a remote attacker who has compromised the renderer process and used social engineering to bypass the web origin policy via a crafted HTML page. The vulnerability has a low CVSS score of 3.1 and does not impact integrity or availability. A fix is available in Chrome version 152.0.7977.65.
CVSS v3.1
Score 3.1low
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper input validation in the Editing functionality of Google Chrome before version 152.0.7977.65. An attacker who has already compromised the renderer process and uses social engineering techniques can exploit this flaw to bypass the web origin policy by delivering a specially crafted HTML page. The issue is classified with a medium security severity by Chromium and has a CVSS 3.1 base score of 3.1, reflecting low impact on confidentiality and no impact on integrity or availability.
Potential Impact
The vulnerability allows bypassing the web origin policy, which could lead to unauthorized access to web content across origins if the attacker has compromised the renderer process and successfully uses social engineering. The impact is limited to confidentiality with no direct integrity or availability effects. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fixed version of Google Chrome is available: 152.0.7977.65. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-25T06:04:21.258Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html","vendor":"Google"}]
Threat ID: 6a8df9baacd9273b49ac6dd3
Added to database: 08/25/2026, 20:23:22 UTC
Last enriched: 09/10/2026, 17:23:14 UTC
Last updated: 10/09/2026, 06:48:19 UTC
Views: 37
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