Medium severity · published Oct 13, 2021
CVE-2021-33609
Missing check in DataCommunicator class in com.vaadin:vaadin-server versions 8.0.0 through 8.14.0 (Vaadin 8.0.0 through 8.14.0) allows authenticated network attacker to cause heap…
4.3
CVSS
0.9%
EPSS
No
On KEV
Description
Missing check in DataCommunicator class in com.vaadin:vaadin-server versions 8.0.0 through 8.14.0 (Vaadin 8.0.0 through 8.14.0) allows authenticated network attacker to cause heap exhaustion by requesting too many rows of data.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
Vaadin · Vaadin
8.0.0 before 8.14.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33609
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33609
Patch
https://github.com/vaadin/framework/pull/12415
Vendor Advisory
https://vaadin.com/security/cve-2021-33609
More from Vaadin
8.4
CVE-2026-107588
Multiple Vulnerabilities in the Highcharts Library Bundled with Vaadin Charts
7.8
CVE-2021-31411
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…
7.5
CVE-2022-29567
The default configuration of a TreeGrid component uses Object::toString as a key on the client-side and server communication in Vaadin 14.8.5 through 14.8.9, 22.0.6 through…
7.5
CVE-2021-31409
Unsafe validation RegEx in EmailValidator component in com.vaadin:vaadin-compatibility-server versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers…
7.5
CVE-2021-31407
Vulnerability in OSGi integration in com.vaadin:flow-server versions 1.2.0 through 2.4.7 (Vaadin 12.0.0 through 14.4.9), and 6.0.0 through 6.0.1 (Vaadin 19.0.0) allows attacker to…