Vulnerability · Published Apr 23, 2021 · Assigned by Vaadin
CVE-2020-36320Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Vaadin from Vaadin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.0%top 19.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | com.vaadin:vaadin-bom | 7.7.22 | GHSA-42j4-733x-5vcf |
| Maven | com.vaadin:vaadin-server | 7.7.22 | GHSA-42j4-733x-5vcf |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Vaadin | Vaadin | 7.0.0 – before * |
| Vaadin | vaadin-server | 7.0.0 – before * |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://vaadin.com/security/cve-2020-36320 x_refsource_MISC
- https://github.com/vaadin/framework/issues/7757 x_refsource_MISC
- https://github.com/vaadin/framework/pull/12104 x_refsource_MISC