What is CVE-2021-38000?

CVE-2021-38000 is a medium-severity vulnerability in Google Android, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-11-23.

How severe is CVE-2021-38000?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-38000 known to be exploited?

Yes. CVE-2021-38000 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

Open Redirect in Google Android

CVE-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.

Vulnerability class: Open Redirect

Published 2021-11-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.049 (92.1th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000

Affected products

Google Android
Google Chrome — versions unspecified
Debian Linux — versions 10.0, 11.0
Fedoraproject Fedora — versions 34

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html (Release Notes)
crbug.com/1249962 (Exploit, Issue Tracking)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
www.debian.org/security/2022/dsa-5046 (vendor-advisory, Mailing List, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-38000?: CVE-2021-38000 is a medium-severity vulnerability in Google Android, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-11-23.
How severe is CVE-2021-38000?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-38000 known to be exploited?: Yes. CVE-2021-38000 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.