Google · Chromium Intents
CVE-2021-38000
Google Chromium Intents Improper Input Validation Vulnerability
What it is
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.
CISA: 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.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: November 17, 2021
More exploited flaws from Google
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Aug 18, 2022 | Insufficient Input Validation | Chromium Intents | Medium 6.5 | 4.6% |
| Oct 27, 2026 | Unchecked Return Value | Brotli | Critical 9.2 | 55% |
| Sep 16, 2026 | Improper Authorization | Pixel | High 8.8 | 0.6% |
| Sep 9, 2026 | Out of Bounds Write | Chromium V8 | High 8.8 | 3.5% |
| Sep 4, 2026 | Type Confusion | Chromium V8 | High 8.8 | 1.8% |
| Jun 9, 2026 | Out-of-Bounds Read and Write | Chromium V8 | High 8.8 | 2.4% |
| Apr 1, 2026 | Use-After-Free | Dawn | High 8.8 | 14% |
| Mar 13, 2026 | Out-of-Bounds Write | Skia | High 8.8 | 2.3% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.