High severity · published Apr 23, 2021
CVE-2020-36320
Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled…
7.5
CVSS
2%
EPSS
No
On KEV
Description
Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
Vaadin · Vaadin
7.0.0 before 7.7.22 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36320
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36320
Exploit
https://github.com/vaadin/framework/issues/7757
Patch
https://github.com/vaadin/framework/pull/12104
Vendor Advisory
https://vaadin.com/security/cve-2020-36320
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