CVE-2026-7351

chromium-browser: Race in MHTML

Published Apr 28, 2026 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
Race in MHTML in Google Chrome prior to 147.0.7727.138 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6239-1 chromium security update
History
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N'}

ssvc

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

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'}

Type Values Removed Values Added
Title Race Condition in MHTML Handling Allows Cross‑Origin Data Leakage via Malicious Extension chromium-browser: Race in MHTML
Weaknesses CWE-368
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N'}

threat_severity

Important

Type Values Removed Values Added
Title Race Condition in MHTML Handling Allows Cross‑Origin Data Leakage via Malicious Extension
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Description Race in MHTML in Google Chrome prior to 147.0.7727.138 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: High)
Weaknesses CWE-362
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Apr 29, 2026, 1:20 PM
Reserved
Apr 28, 2026, 8:02 PM
Status
Analyzed
Published
Apr 28, 2026, 11:16 PM
Modified
Jul 24, 2026, 8:10 AM
Severity
Important
Public date
Apr 28, 2026, 12:00 AM