EUVD-2026-65938
GHSA-f46m-jh67-r27w
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Crafted HTML page delivery confirms AV:N; side-channel precision observation requires AC:H; no attacker auth needed (PR:N); victim must visit page (UI:R); impact is confidentiality-only with no integrity or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Observable discrepancy in Forms in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Observable discrepancy in the Forms component of Google Chrome prior to 152.0.7977.65 enables remote attackers to extract sensitive information by serving a crafted HTML page that induces measurable behavioral side-channel differences. The CVSS vector (AC:H/UI:R) confirms exploitation requires both high attack complexity - precise timing or environmental control to reliably observe the discrepancy - and active user interaction to visit the malicious page. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a victim running Google Chrome prior to 152.0.7977.65 to actively visit an attacker-controlled web page (UI:R confirmed by CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD-assigned CVSS 5.3 (Medium) is consistent with a remotely triggerable information-disclosure-only flaw constrained by high attack complexity and mandatory user interaction - two factors that substantially reduce real-world exploitation probability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a crafted HTML page containing forms engineered to trigger measurable behavioral discrepancies in Chrome's rendering or processing pipeline. When a victim on a vulnerable Chrome version navigates to the page, attacker-controlled JavaScript precisely measures response timing or rendering differences to infer sensitive information - such as cross-origin form state or browser history signals. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, the vendor-released patch version confirmed by the Chrome stable channel advisory 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-203 – Observable Discrepancy
View allSame technique Information Disclosure
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External POC / Exploit Code
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