CVE-2021-31411

low-risk
Published 2021-05-05

Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0 through 6.0.5 (Vaadin 19.0.0 through 19.0.4) allows local users to inject malicious code into frontend resources during application rebuilds.

Do I need to act?

-
0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.3/10 Medium
LOCAL / HIGH complexity

Affected Products (2)

Flow

Affected Vendors

Vaadin

References (4)

Patch https://github.com/vaadin/flow/pull/10640
Vendor Advisory https://vaadin.com/security/cve-2021-31411
Patch https://github.com/vaadin/flow/pull/10640
Vendor Advisory https://vaadin.com/security/cve-2021-31411
23
/ 100
low-risk
Severity 16/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low