Back
CVE-2020-36320
Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7
High7.5EPSS 2.0%
- Published
- Updated
- Reserved
- Assigned by
- Vaadin
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VaadinCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.0% · top 20% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected 7.0.0 – < *
- affected 7.0.0 – < *
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavencom.vaadin:vaadin-bomGHSA-42j4-733x-5vcf (opens in a new tab)
- Mavencom.vaadin:vaadin-serverGHSA-42j4-733x-5vcf (opens in a new tab)
References (3)
- https://vaadin.com/security/cve-2020-36320 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/vaadin/framework/issues/7757 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/vaadin/framework/pull/12104 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-42j4-733x-5vcf (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-36320)Record last updated .