CVE-2026-103621: Integer overflow in Google Chrome
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. (Chromium security severity: High)
AI Analysis
Technical Summary
CVE-2026-103621 is an integer overflow vulnerability in the Compositing module of Google Chrome versions before 154.0.8037.97. Exploitation of this flaw can lead to cross-origin data leakage when a user visits a maliciously crafted HTML page. The vulnerability has been publicly disclosed and is rated as high severity by Chromium security. Google has issued a stable channel update to fix this issue, as detailed in their official advisory.
Potential Impact
Successful exploitation of this vulnerability can result in unauthorized disclosure of cross-origin data, potentially compromising user privacy and security. There are no known exploits in the wild at this time.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 154.0.8037.97 or later, where this vulnerability has been fixed. Refer to the official Google Chrome stable channel update advisory for details: https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop.html
CVE-2026-103621: Integer overflow in Google Chrome
Description
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. (Chromium security severity: High)
Affected software
Chrome
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103621 is an integer overflow vulnerability in the Compositing module of Google Chrome versions before 154.0.8037.97. Exploitation of this flaw can lead to cross-origin data leakage when a user visits a maliciously crafted HTML page. The vulnerability has been publicly disclosed and is rated as high severity by Chromium security. Google has issued a stable channel update to fix this issue, as detailed in their official advisory.
Potential Impact
Successful exploitation of this vulnerability can result in unauthorized disclosure of cross-origin data, potentially compromising user privacy and security. There are no known exploits in the wild at this time.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 154.0.8037.97 or later, where this vulnerability has been fixed. Refer to the official Google Chrome stable channel update advisory for details: https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop.html
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-09-30T23:12:12.746Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop.html","vendor":"Google"}]
Threat ID: 6abfd8f3a43b0b3b89d5971d
Added to database: 10/02/2026, 16:16:51 UTC
Last enriched: 10/02/2026, 16:31:47 UTC
Last updated: 10/03/2026, 03:45:56 UTC
Views: 10
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