CVE-2026-103621: Integer overflow in Compositing
Chromium CVE-2026-103621: Integer overflow
Other sources
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)
— MITRE
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 154.0.8037.97 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 154.0.4258.62 - Upgrade
Upgrade
Google Chrometo a version that resolves this vulnerability.Fixed in 154.0.8037.97
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
Who is exposed to this issue?
Users of Google Chrome versions earlier than 154.0.8037.97 are exposed when they visit a malicious or crafted HTML page.
What must an attacker do to exploit the vulnerability?
The attacker needs to induce the target to load a crafted HTML page remotely. The reported impact is leakage of cross-origin data.
How can I determine whether a system is affected?
Check the installed Google Chrome version. Versions prior to 154.0.8037.97 are affected according to the available information.