Google Chromium Intents Improper Input Validation Vulnerability

Are you affected?

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• cpe debian/debian linux10.0
• cpe debian/debian linux11.0
• cpe fedoraproject/fedora34
• cpe google/chromeversion unspecified
• vendor Google Chromium Intentsversion unspecified

How to fix CVE-2021-38000

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Nov 17, 2021.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Nov 3, 2021 · Catalog

   Detected

   Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Nov 17, 2021 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Sources

• CISA KEVConfirmed exploitationCVE-2021-38000

  Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

  cisa.gov
• CVE.orgVulnerability recordCVE-2021-38000

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2021-38000

  30-day exploitation probability 4.9%

  first.org
• NIST NVDVulnerability recordCVE-2021-38000

  Insufficient validation of untrusted input in Intents in Google Chrome on Android prior to 95.0.4638.69 allowed a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page.

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2021-38000

  Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to,

  vulncheck.com

References

• VulnCheck exploitation evidence · blog.talosintelligence.com
• Release Notes · chromereleases.googleblog.com
• Exploit · crbug.com
• VulnCheck exploitation evidence · docs.google.com
• Release Notes · lists.fedoraproject.org
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · storage.googleapis.com
• VulnCheck exploitation evidence · cisa.gov
• Mailing List · debian.org

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.