CVE-2021-33609 json
Denial of service in DataCommunicator class in Vaadin 8
published 2021-10-13 5 y ago modified 2026-06-17 4 mo ago also GHSA-qcgx-crrx-38v5 , EUVD-2021-2248
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven com.vaadin:vaadin-server 8.14.1
- vaadin vaadin 8.14.1
- github.com/vaadin/framework#12415 pull request
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | com.vaadin:vaadin-server | >=8.0.6, <8.14.1 |
8.14.1 |
Affected products
- Vaadin Vaadin
- Vaadin vaadin-server
Classification
References
-
github.com
/vaadin/framework/pull/12415
web, patch, third-party-advisory
-
vaadin.com
/security/cve-2021-33609
web, vendor-advisory
-
github.com
/vaadin/framework/security/advisories/GHSA-qcgx-crrx-38v5
web
-
nvd.nist.gov
/vuln/detail/CVE-2021-33609
advisory
-
github.com
/vaadin/framework
package
Sources
- CVE List CVE-2021-33609
- GitHub Advisory GHSA-qcgx-crrx-38v5
- NVD CVE-2021-33609
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