CVE-2026-78960

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Published Aug 25, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Information leak in Extensions in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)

Analysis

AI-generated

Technical impact

A remote attacker can exploit a flaw in the Chrome extension system to read cross‑origin data by installing a malicious extension that the user believes is legitimate. The vulnerability is an Information Exposure weakness (CWE‑200) that allows the extension to bypass the browser’s normal same‑origin data restrictions.

Affected Systems

Google Chrome, available on all desktop platforms, is affected for versions earlier than 152.0.7977.65. The issue is reported to exist only before that release and has been addressed in later updates.

Risk and Exploitability

The flaw is exploitable only when a user installs a malicious extension, typically through social‑engineering techniques. No public exploit has been documented and the EPSS score is <1%, with a CVSS score of 6.5. The vulnerability is not listed in CISA KEV and is rated medium by Chromium, indicating a moderate confidentiality risk for users with vulnerable versions.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update Chrome to the latest release that includes the 152.0.7977.65 update or newer to remove the extension information‑leak flaw.
  • Disable or remove any extensions that are unfamiliar or that grant broad permissions, especially those installed from unverified sources.
  • Educate users to be cautious with extensions: verify the publisher, review requested permissions, and avoid installing extensions from untrusted sites.

Generated by OpenCVE AI on August 28, 2026 at 18:45 UTC.

Tracking

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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
Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Extension Information Leak in Google Chrome via Social Engineering
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
Type Values Removed Values Added
Title Extension Information Leak in Google Chrome via Social Engineering
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Description Information leak in Extensions in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)
Weaknesses CWE-200
References
Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Aug 28, 2026, 4:23 PM
Reserved
Aug 25, 2026, 6:05 AM

View source JSON

Updated
Aug 28, 2026, 4:22 PM

JSON

Status
Analyzed
Published
Aug 25, 2026, 9:17 PM
Modified
Aug 31, 2026, 1:40 PM

View source JSON

No data.

Updated
Aug 28, 2026, 7:00 PM

JSON