CVE-2026-78908: Information leak in Canvas

Published Jul 9, 2026
·
Updated

Chromium: CVE-2026-78908 Information leak in Canvas

Other sources

Information leak in Canvas in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to bypass web origin policy 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

Google

Affected Software

5 affected componentsFixes available
Google Google Chrome<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64
Google Chrome<152.0.7977.65
Microsoft Edge<152.0.4191.53
Microsoft Edge (Chromium-based)<152.0.4191.53
152.0.4191.53

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 152.0.7977.64
  2. Upgrade

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

    Fixed in 152.0.4191.53
  3. Upgrade

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

    Fixed in 152.0.7977.65Patch CVE-2026-78908

Event History

Jul 9, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Aug 25, 2026
CVE Published
via MITRE·08:10 PM
Data Sourced
via MITRE·08:10 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 28, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What does an attacker need to exploit this issue?

An attacker needs to get a user to load a crafted HTML page in an affected Chrome browser. The issue is exploitable remotely and can bypass the web origin policy.

2

Which Chrome versions are affected?

Google Chrome versions prior to 152.0.7977.65 are affected. Update Chrome to 152.0.7977.65 or later.

3

What could indicate exposure before an update is applied?

Exposure requires visiting an attacker-controlled crafted HTML page while using an affected version. The provided information does not identify a specific observable indicator or log artifact for successful exploitation.

Company

Resources

Contact

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