EUVD-2026-65830
GHSA-hv4j-76qc-xm5f
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-reachable with no privileges needed, but UI:R limits opportunistic mass exploitation; C:H reflects potential synced credential exposure with no write or availability impact.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Improper input validation in Sync in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: Medium)
AnalysisAI
Chrome's browser Sync subsystem in versions prior to 152.0.7977.65 leaks sensitive user data due to improper validation of crafted inbound network traffic (CWE-20), enabling a remote attacker to read high-confidentiality synchronized content such as credentials or browsing history. The CVSS 6.5 vector (AV:N/AC:L/PR:N/UI:R) confirms the attack is network-reachable with no privilege requirement, but a user interaction step limits opportunistic mass exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target to be running Google Chrome prior to 152.0.7977.65 with the Chrome Sync feature enabled and the user signed into a Google account, since the Sync subsystem is only active in this configuration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 score captures a medium-severity network-accessible flaw with high confidentiality impact, but several signals constrain real-world priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker positions themselves to deliver crafted network traffic to a Chrome user - for example via a malicious website, a man-in-the-middle position on an untrusted network, or injected Sync server responses - causing Chrome's Sync input validation to misprocess the payload and return or expose sensitive synchronized data such as saved passwords or browsing history. The UI:R requirement suggests the user must take some action (e.g., navigate, trigger a Sync operation) in a context where the malformed traffic is active. … |
| Remediation | Upgrade Google Chrome to version 152.0.7977.65 or later, as documented in the stable channel update 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-20 – Improper Input Validation
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External POC / Exploit Code
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