Description
Improper certificate validation in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)
Published: 2026-09-09
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability arises from improper certificate validation in the Loader component of Google Chrome. An attacker who can drive the browser to process crafted network traffic can cause the browser to accept an invalid certificate. This leads to the browser treating traffic from an untrusted issuer as trusted and bypassing the web origin policy. The bypass enables a malicious site to read or write data across origins, potentially stealing data or injecting malicious content. The CVE lists the severity as low, but the impact on confidentiality and integrity can be significant depending on the context.

Affected Systems

Google Chrome is affected. The issue exists in all versions prior to 153.0.8010.36. No specific patch version was supplied, but updating to 153.0.8010.36 or later resolves the issue.

Risk and Exploitability

The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. The unspecified CVSS severity and lack of a public exploit suggest that exploitation is likely low‑probability and requires an attack that can deliver malicious network traffic to a victim’s browser. Because the vulnerability is triggered by crafted network traffic and involves certificate handling, the attack vector is inferred to be network‑bound, possibly via phishing or a malicious website that encourages users to visit a specially crafted URL. Without a public exploit, the risk remains low, but the potential for origin‑policy bypass warrants patching.

Generated by OpenCVE AI on September 9, 2026 at 05:50 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Roll out the latest Chrome update (153.0.8010.36 or newer) across all user devices.
  • Disable or configure Chrome to reject invalid certificates, ensuring that any attempts to override certificate errors are blocked.
  • Monitor user reports of unusual pop‑ups or certificate warning bypasses, and apply a temporary network filter or ad‑blocker to prevent traffic from untrusted origins.

Generated by OpenCVE AI on September 9, 2026 at 05:50 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 09 Sep 2026 06:15:00 +0000

Type Values Removed Values Added
Title Improper Certificate Validation Allows Origin Policy Bypass in Google Chrome Loader

Wed, 09 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
Description Improper certificate validation in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)
Weaknesses CWE-295
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-09-09T00:10:06.042Z

Reserved: 2026-09-08T22:41:03.625Z

Link: CVE-2026-87571

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-09T01:17:14.827

Modified: 2026-09-09T01:17:14.827

Link: CVE-2026-87571

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T06:00:05Z

Weaknesses
  • CWE-295

    Improper Certificate Validation