CVE-2026-17943: Inappropriate implementation in Parser

Published May 18, 2026
·
Updated

Chromium: CVE-2026-17943 Inappropriate implementation in Parser

Other sources

Inappropriate implementation in Parser in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)

— NVD

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

4 affected componentsFixes available
Google Google Chrome<151.0.7922.72
Google Chrome<151.0.7922.71
151.0.7922.71
Microsoft Edge (Chromium-based)<151.0.4129.59
151.0.4129.59
Microsoft Edge<151.0.4129.59

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 151.0.7922.71
  2. Upgrade

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

    Fixed in 151.0.4129.59
  3. Upgrade

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

    Fixed in 151.0.7922.72
  4. Compensating control

    If using Microsoft Edge (Chromium-based), note it ingests Chromium and should be updated to a version that includes the Chromium fix for CVE-2026-17943 to prevent CSP bypass via crafted HTML.

Event History

May 18, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jul 30, 2026
CVE Published
via MITRE·12:25 AM
Data Sourced
via MITRE·12:25 AM
DescriptionWeakness
Data Sourced
via NVD·01:16 AM
DescriptionSeverityWeakness
Jul 31, 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.

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Frequently Asked Questions

1

What is the severity of CVE-2026-17943?

The severity of CVE-2026-17943 is medium with a CVSS score of 4.3.

2

What does CVE-2026-17943 impact?

CVE-2026-17943 impacts Google Chrome versions prior to 151.0.7922.72 and Microsoft Edge (Chromium-based).

3

How do I fix CVE-2026-17943?

To fix CVE-2026-17943, update your Google Chrome or Microsoft Edge browser to the latest version available.

4

What type of vulnerability is CVE-2026-17943?

CVE-2026-17943 is classified as an inappropriate implementation in the Parser.

5

Can CVE-2026-17943 be exploited remotely?

Yes, CVE-2026-17943 can be exploited remotely via a crafted HTML page to bypass content security policy.

Company

Resources

Contact

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