Access Control Bypass Affecting chromium package, versions [,140.0.7339.80)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Nov 2025
- disclosed7 Nov 2025
- creditNoam Gaash
Introduced: 7 Nov 2025
NewCVE-2025-12909 (opens in a new tab)How to fix?
Upgrade chromium to version 140.0.7339.80 or higher.
Overview
Affected versions of this package are vulnerable to Access Control Bypass due to insufficient Content Security Policy enforcement in the Network.loadNetworkResource method of the DevTools protocol network handler. An attacker can exfiltrate cross-origin data by sending source map requests through DevTools that bypass connect-src CSP checks.