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CVE-2020-36321

MEDIUM
Published 2021-04-23T16:05:40.889444Z
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CVSS Score

V3.1
5.9
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.006
probability
of exploitation in the wild

There is a 0.6% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.669
Higher than 66.9% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
NONE
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Vaadin

Vaadin

Affected Versions:

14.0.0
Vaadin

flow-server

Affected Versions:

2.0.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Directory traversal in development mode handler in Vaadin 14 and 15-17

GHSA-49r2-73m6-pp8f

Advisory Details

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. - https://vaadin.com/security/cve-2020-36321

Affected Packages

Maven com.vaadin:flow-server
ECOSYSTEM: ≥3.0.0 <5.0.0
Maven com.vaadin:flow-server
ECOSYSTEM: ≥2.0.0 <2.4.2

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

WEB https://github.com/vaadin/flow/security/advisories/GHSA-49r2-73m6-pp8f
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-36321
WEB https://github.com/vaadin/flow/pull/9392
WEB https://vaadin.com/security/cve-2020-36321

Advisory provided by GitHub Security Advisory Database. Published: April 19, 2021, Modified: April 23, 2021

References

https://vaadin.com/security/cve-2020-36321
https://github.com/vaadin/flow/pull/9392
Published: 2021-04-23T16:05:40.889444Z
Last Modified: 2024-09-17T00:45:59.853Z
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