Arbitrary file upload in Google Chrome
CVE-2021-21131
Insufficient policy enforcement in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.
EPSS: 0.080 (94.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Google Chrome — versions unspecified
- Microsoft Edge_chromium
Weakness classification (CWE)
Public proof-of-concept exploits
References
- chrome-cve-admin@google.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- chrome-cve-admin@google.com (Permissions Required, Third Party Advisory, x_refsource_MISC)
- chrome-cve-admin@google.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-21131?
- CVE-2021-21131 is a medium-severity vulnerability in Google Chrome, classified under Improper Link Resolution Before File Access. CVSS score: 6.5/10. Published 2021-02-09.
- How severe is CVE-2021-21131?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-21131 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.