CVE-2026-11289: Side-channel information leakage in Google Chrome
A side-channel information leakage vulnerability exists in the Paint component of Google Chrome prior to version 149.0.7827.53. This flaw allows a remote attacker to leak cross-origin data by crafting a malicious HTML page. The vulnerability has a medium severity rating with a CVSS score of 6.5. No known exploits are reported in the wild. The issue is identified as CWE-203 (Information Exposure Through Discrepancy).
AI Analysis
Technical Summary
CVE-2026-11289 is a side-channel information leakage vulnerability in the Paint component of Google Chrome versions before 149.0.7827.53. It enables a remote attacker to leak cross-origin data by using a specially crafted HTML page. The vulnerability is classified with a CVSS 3.1 base score of 6.5, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required, but user interaction is necessary. The impact is high confidentiality loss without integrity or availability impact. No official remediation level or patch status is explicitly stated in the provided data, but a vendor advisory link is available for further details.
Potential Impact
The vulnerability allows remote attackers to leak sensitive cross-origin data via a crafted HTML page, potentially exposing confidential information. There is no reported impact on data integrity or availability. The CVSS score of 6.5 reflects a medium severity with high confidentiality impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html for current remediation guidance. Users and administrators should monitor this advisory for updates and apply any official fixes once available. No temporary or workaround mitigations are specified in the provided data.
CVE-2026-11289: Side-channel information leakage in Google Chrome
Description
A side-channel information leakage vulnerability exists in the Paint component of Google Chrome prior to version 149.0.7827.53. This flaw allows a remote attacker to leak cross-origin data by crafting a malicious HTML page. The vulnerability has a medium severity rating with a CVSS score of 6.5. No known exploits are reported in the wild. The issue is identified as CWE-203 (Information Exposure Through Discrepancy).
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-11289 is a side-channel information leakage vulnerability in the Paint component of Google Chrome versions before 149.0.7827.53. It enables a remote attacker to leak cross-origin data by using a specially crafted HTML page. The vulnerability is classified with a CVSS 3.1 base score of 6.5, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required, but user interaction is necessary. The impact is high confidentiality loss without integrity or availability impact. No official remediation level or patch status is explicitly stated in the provided data, but a vendor advisory link is available for further details.
Potential Impact
The vulnerability allows remote attackers to leak sensitive cross-origin data via a crafted HTML page, potentially exposing confidential information. There is no reported impact on data integrity or availability. The CVSS score of 6.5 reflects a medium severity with high confidentiality impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html for current remediation guidance. Users and administrators should monitor this advisory for updates and apply any official fixes once available. No temporary or workaround mitigations are specified in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-06-04T17:11:16.729Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html","vendor":"Google"}]
Threat ID: 6a220eede29bf47b50de3a5b
Added to database: 06/04/2026, 23:49:01 UTC
Last enriched: 06/12/2026, 10:27:18 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 111
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.