Integer overflow in Compositing in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (CVE-2026-103621)
An integer overflow vulnerability in the compositing component of Google Chrome prior to version 154.0.8037.97 allows a remote attacker to leak cross-origin data by crafting a malicious HTML page. This vulnerability has been assigned CVE-2026-103621 and is rated with high severity by Chromium security. No CVSS score is provided. No explicit patch or remediation details are available in the provided data.
AI Analysis
Technical Summary
CVE-2026-103621 is an integer overflow vulnerability in the compositing functionality of Google Chrome versions before 154.0.8037.97. Exploitation involves a remote attacker delivering a specially crafted HTML page that triggers the overflow, resulting in leakage of cross-origin data. The Chromium security team has rated this vulnerability as high severity. There is no information on active exploitation in the wild or detailed technical mitigations in the provided data.
Potential Impact
Successful exploitation can lead to unauthorized disclosure of cross-origin data, potentially compromising user privacy and security by leaking sensitive information accessible through the browser's compositing process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users and administrators should monitor official Google Chrome security advisories for updates and apply the fix once available.
Integer overflow in Compositing in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (CVE-2026-103621)
Description
An integer overflow vulnerability in the compositing component of Google Chrome prior to version 154.0.8037.97 allows a remote attacker to leak cross-origin data by crafting a malicious HTML page. This vulnerability has been assigned CVE-2026-103621 and is rated with high severity by Chromium security. No CVSS score is provided. No explicit patch or remediation details are available in the provided data.
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-2026-103621 is an integer overflow vulnerability in the compositing functionality of Google Chrome versions before 154.0.8037.97. Exploitation involves a remote attacker delivering a specially crafted HTML page that triggers the overflow, resulting in leakage of cross-origin data. The Chromium security team has rated this vulnerability as high severity. There is no information on active exploitation in the wild or detailed technical mitigations in the provided data.
Potential Impact
Successful exploitation can lead to unauthorized disclosure of cross-origin data, potentially compromising user privacy and security by leaking sensitive information accessible through the browser's compositing process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users and administrators should monitor official Google Chrome security advisories for updates and apply the fix once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wm39-rhjr-c7cr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-103621"]
- State
- PUBLISHED
Threat ID: 6ac00d25a43b0b3b89fb1488
Added to database: 10/02/2026, 19:59:33 UTC
Last enriched: 10/02/2026, 20:02:44 UTC
Last updated: 10/03/2026, 04:45:56 UTC
Views: 8
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