CVE-2021-31409 json
Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19
published 2021-05-04 5 y ago modified 2026-06-17 4 mo ago also GHSA-c332-w4jm-55wv , EUVD-2021-1033
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
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 to cause uncontrolled resource consumption by submitting malicious email addresses.
Patch / fix
- maven com.vaadin:vaadin-compatibility-server 8.13.0
- github.com/vaadin/framework#12241 pull request
- github.com/vaadin/framework/issues/12240 advisory
Exploit prediction
1.67% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | com.vaadin:vaadin-compatibility-server | >=8.0.0, <8.13.0 |
8.13.0 |
Affected products
- Vaadin Vaadin
- Vaadin vaadin-compatibility-server
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/vaadin/framework/pull/12241
web, patch, third-party-advisory
-
github.com
/vaadin/framework/issues/12240
web, patch, third-party-advisory
-
vaadin.com
/security/cve-2021-31409
web, vendor-advisory
-
github.com
/vaadin/framework/security/advisories/GHSA-c332-w4jm-55wv
web
-
nvd.nist.gov
/vuln/detail/CVE-2021-31409
advisory
Sources
- CVE List CVE-2021-31409
- GitHub Advisory GHSA-c332-w4jm-55wv
- NVD CVE-2021-31409
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