CVE-2026-17820: Insufficient policy enforcement in Google Chrome
CVE-2026-17820 is a medium severity vulnerability in Google Chrome's Autofill feature prior to version 151.0.7922.72. It involves insufficient policy enforcement that allows a remote attacker to leak cross-origin data via a crafted HTML page. The vulnerability does not impact integrity or availability, only confidentiality. No known exploits are reported in the wild. A vendor advisory is available but does not explicitly confirm patch status or remediation level.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-17820) affects Google Chrome versions before 151.0.7922.72 and is caused by insufficient policy enforcement in the Autofill component. This flaw allows a remote attacker to leak cross-origin data by crafting a malicious HTML page, potentially exposing sensitive user information. The issue is classified under CWE-346 (Insufficient Authorization). The CVSS v3.1 base score is 4.3 (medium), reflecting a network attack vector with low complexity and no privileges required, but requiring user interaction. Confidentiality impact is low, with no impact on integrity or availability.
Potential Impact
An attacker can remotely cause leakage of cross-origin data through the Autofill feature, potentially exposing some user information from other origins. There is no impact on data integrity or system availability. No known exploits in the wild have been reported.
Mitigation Recommendations
The vendor advisory linked does not explicitly state patch availability or remediation level. Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html for current remediation guidance. Users should update to Chrome version 151.0.7922.72 or later once confirmed patched. Until then, exercise caution with untrusted web content that could exploit Autofill.
CVE-2026-17820: Insufficient policy enforcement in Google Chrome
Description
CVE-2026-17820 is a medium severity vulnerability in Google Chrome's Autofill feature prior to version 151.0.7922.72. It involves insufficient policy enforcement that allows a remote attacker to leak cross-origin data via a crafted HTML page. The vulnerability does not impact integrity or availability, only confidentiality. No known exploits are reported in the wild. A vendor advisory is available but does not explicitly confirm patch status or remediation level.
CVSS v3.1
Score 4.3medium
Affected software
Chrome
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-17820) affects Google Chrome versions before 151.0.7922.72 and is caused by insufficient policy enforcement in the Autofill component. This flaw allows a remote attacker to leak cross-origin data by crafting a malicious HTML page, potentially exposing sensitive user information. The issue is classified under CWE-346 (Insufficient Authorization). The CVSS v3.1 base score is 4.3 (medium), reflecting a network attack vector with low complexity and no privileges required, but requiring user interaction. Confidentiality impact is low, with no impact on integrity or availability.
Potential Impact
An attacker can remotely cause leakage of cross-origin data through the Autofill feature, potentially exposing some user information from other origins. There is no impact on data integrity or system availability. No known exploits in the wild have been reported.
Mitigation Recommendations
The vendor advisory linked does not explicitly state patch availability or remediation level. Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html for current remediation guidance. Users should update to Chrome version 151.0.7922.72 or later once confirmed patched. Until then, exercise caution with untrusted web content that could exploit Autofill.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:34:57.213Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa0979c2644c7f849b58a
Added to database: 07/30/2026, 00:53:43 UTC
Last enriched: 08/06/2026, 17:28:50 UTC
Last updated: 09/12/2026, 22:01:31 UTC
Views: 37
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.