CVE-2026-103621
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
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.
Risk Assessment
High risk of cross-origin data leakage, potentially compromising user information confidentiality. Requires only visiting a malicious page.
Recommendation
Update Google Chrome to version 154.0.8037.97 or later. Implement Content Security Policies (CSP) in web applications.
Other vulnerabilities in Google Chrome
See all- CVE-2026-120930Unknown
Incorrect authorization in Blink in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass web origin policy via a crafted HTML page. Chromium rates this as High severity.
- CVE-2026-121257Unknown
Use after free in TabStrip in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)
- CVE-2026-121256High
Use of a released resource in GPU in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page.
- CVE-2026-121255Unknown
Incorrect authorization in Autofill AI in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page.
- CVE-2026-121254Unknown
Information leak in Select in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain sensitive information via a crafted HTML page.
- CVE-2026-121253Unknown
Missing authorization in DevTools in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass site isolation via a crafted Chrome extension.
- CVE-2026-121252Unknown
Incorrect authorization in Core in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page.
- CVE-2026-121251Unknown
Missing authorization in V8 in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page.
- CVE-2026-121250Unknown
Use after free in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension.
- CVE-2026-121248Unknown
Incorrect authorization in API in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass system access restrictions via a crafted Chrome extension.
Original NVD description (English source)
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)
Vulnerability data from NVD (NIST) · CISA KEV · EPSS