CVE-2026-5869: Heap buffer overflow in WebML

Published Mar 18, 2026
·
Updated

Chromium: CVE-2026-5869 Heap buffer overflow in WebML

Other sources

Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)

— MITRE

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Credit

c6eed09fc8b174b0f3eebedcceb1e792

Affected Software

7 affected componentsFixes available
Google Chrome<147.0.7727.55
147.0.7727.55
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<147.0.3912.60
All of the following
Google Chrome<147.0.7727.55
Any of the following
Apple macOS
Linux Linux kernel
Microsoft Windows

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 147.0.7727.55
  2. Upgrade

    Upgrade Google Chrome / Chromium to a version that resolves this vulnerability.

    Fixed in 147.0.7727.55

Event History

Mar 18, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Apr 8, 2026
CVE Published
via MITRE·09:20 PM
Data Sourced
via MITRE·09:20 PM
DescriptionWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
Apr 11, 2026
Data Sourced
via Microsoft·12:31 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·12:31 AM
DescriptionAffected Software
Sep 28, 58254
Event
via FIRST·07:50 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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