Description
Information leak in BFCache in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-08-25
Score: 3.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: Confidentiality Breach via BFCache Data Leak
Action: Patch Now
AI Analysis

Impact

A remote attacker who has already compromised the renderer process can provoke Chrome’s Back‑Forward Cache mechanism to exfiltrate data from a different origin. The flaw allows the attacker to construct a malicious HTML page that, when visited, coerces the browser into reading cached resources that belong to another site, exposing sensitive information. The weakness is a Privacy Violation – data that should remain confidential becomes accessible to a malicious renderer.

Affected Systems

Google Chrome versions earlier than 152.0.7977.65 are affected. Users running the stable channel prior to this build are at risk once a renderer process is compromised.

Risk and Exploitability

The CVSS score of 3.1 classifies this flaw as Low severity, indicating limited scope for exploitation. The EPSS score of <1% suggests a very low probability that the vulnerability will be actively targeted, and no public exploit has been documented. However, because the required conditions—a compromised renderer process and a crafted webpage—are conceivable, a determined attacker could trigger BFCache to read cross‑origin data, potentially exposing sensitive information. The vulnerability is not listed in the CISA KEV catalog. The attack path requires the attacker to deliver a malicious page that forces the browser to access cached resources from another origin.

Generated by OpenCVE AI on August 26, 2026 at 22:42 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Google Chrome to version 152.0.7977.65 or later
  • Enable Site Isolation to prevent renderer processes from accessing each other, reducing impact if a renderer is compromised
  • Disable BFCache via enterprise policy or command‑line flag to prevent cross‑origin data caching

Generated by OpenCVE AI on August 26, 2026 at 22:42 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4771-1 chromium security update
Debian DSA Debian DSA DSA-6482-1 chromium security update
History

Mon, 31 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

Wed, 26 Aug 2026 23:00:00 +0000

Type Values Removed Values Added
Title BFCache Cross‑Origin Data Leak in Google Chrome 152.0.7977.65 and Earlier

Wed, 26 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 26 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N'}


Wed, 26 Aug 2026 01:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Wed, 26 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Title BFCache Cross‑Origin Data Leak in Google Chrome 152.0.7977.65 and Earlier

Tue, 25 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Description Information leak in BFCache in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-200
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-08-26T19:55:21.623Z

Reserved: 2026-08-25T06:08:25.840Z

Link: CVE-2026-79059

cve-icon Vulnrichment

Updated: 2026-08-26T19:49:22.858Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-25T21:18:01.807

Modified: 2026-08-31T16:33:27.000

Link: CVE-2026-79059

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T22:45:03Z

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor