EUVD-2026-65854
GHSA-2jxj-f4xh-xjfv
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-reachable side-channel requiring victim interaction and high-complexity timing conditions; no integrity or availability impact, confidentiality only.
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 Network 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 (CWE-203) in Google Chrome's network stack prior to version 152.0.7977.65 enables remote attackers to extract sensitive information by exploiting behavioral differences observable from a crafted HTML page. Exploitation requires high attack complexity and user interaction - the victim must visit a malicious page - constraining real-world impact despite the high confidentiality rating in the CVSS vector. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim actively navigate to an attacker-controlled HTML page (UI:R), making drive-by exploitation dependent on social engineering or malvertising. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.3 (Medium) accurately captures the constrained nature of this vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts an HTML page that leverages network-level observable discrepancies - such as differential timing or connection behavior - to infer whether a victim's browser has recently accessed specific cross-origin resources or holds particular session-linked network state. The victim is socially engineered into visiting the malicious page, and the attacker's JavaScript measures timing or behavioral differences to reconstruct sensitive information. … |
| Remediation | The primary fix is to upgrade Google Chrome to version 152.0.7977.65 or later, available through Chrome's built-in update mechanism or via the stable channel release detailed 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
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External POC / Exploit Code
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