CVE-2020-36321

HIGHCVSS 7.5/10EPSS 1.21%

Last modified

CVE-2020-36321 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
VaadinFlow>= 2.0.0, < 2.4.2
VaadinFlow>= 3.0.0, < 5.0.0
VaadinVaadin>= 14.0.0, < 14.4.3
VaadinVaadin>= 15.0.0, < 18.0.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-36321?
Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.
How severe is CVE-2020-36321?
CVE-2020-36321 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36321?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36321?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST