EUVD-2026-65889
GHSA-rq7c-jjwm-j9pm
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
S:C assigned because the WebRTC flaw crosses the same-origin security boundary into other origins; AC:H reflects the mandatory prior renderer compromise prerequisite.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Improper input validation in WebRTC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Web origin policy bypass in Google Chrome's WebRTC component (prior to 152.0.7977.65) enables a network-positioned attacker who has already compromised the renderer process to cross same-origin boundaries via a crafted HTML page requiring user interaction. This is a chained exploitation step - not a standalone critical flaw - making it most relevant as a second-stage component in a targeted multi-stage browser exploit. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two distinct, chained prerequisites: (1) the target's Chrome renderer process must already be compromised through a separate, independent vulnerability - this is an explicit condition stated in the CVE description and reflected in the CVSS AC:H rating; and (2) the victim must interact with a specially crafted HTML page while running a Chrome version prior to 152.0.7977.65. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Risk signals collectively indicate a low-priority, chained vulnerability with limited standalone exploitation value. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, which contains the vendor-released patch addressing the WebRTC improper input validation flaw; the full release notes are available at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Authentication Bypass
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External POC / Exploit Code
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