EUVD-2026-74518
GHSA-vmgv-23fp-pw3j
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Renderer pre-compromise is a mandatory high-complexity prerequisite (AC:H); only limited cross-origin read possible (C:L); no integrity or availability impact established.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
5DescriptionCVE.org
Missing authorization in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Missing authorization in Chrome's WebUI component (prior to 153.0.8010.36) allows an attacker who has already compromised the renderer process to bypass the web origin policy via a crafted HTML page, potentially reading cross-origin content. This is a chained post-exploitation technique requiring a separately-achieved renderer compromise as a hard prerequisite, not a standalone initial-access vector. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two independent conditions to both be satisfied: (1) the victim must be running a Chrome version prior to 153.0.8010.36 and must actively visit or render a crafted HTML page (user interaction required); and (2) the attacker must have already independently compromised the Chrome renderer process via a separate, unrelated vulnerability - this is not achievable through this CVE alone. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 3.1 (AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N) accurately reflects the constrained standalone impact: AC:H accounts for the mandatory renderer pre-compromise prerequisite, UI:R reflects required user interaction, and C:L with no integrity or availability impact bounds the consequence to a limited cross-origin read. … 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 | The primary fix is upgrading Google Chrome to version 153.0.8010.36 or later; this is confirmed as the vendor-released patch per the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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