CVE-2020-36320— Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7
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I. Basic Information for CVE-2020-36320
Vulnerability Information
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Vulnerability Title
Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vaadin vaadin-server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vaadin-server是Vaadin开源的一个应用软件。一个用于在Java后端上快速开发Web应用程序的平台。 vaadin:vaadin-server versions 7.0.0 through 7.7.21 中的EmailValidator class存在资源管理错误漏洞，该漏洞允许攻击者通过提交恶意电子邮件地址来导致不受控制的资源消耗。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Vaadin | Vaadin | 7.0.0 ~ * | - | |
| Vaadin | vaadin-server | 7.0.0 ~ * | - |
II. Public POCs for CVE-2020-36320
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/vaadin/framework/issues/7757x_refsource_MISC
- https://vaadin.com/security/cve-2020-36320x_refsource_MISC
- https://github.com/vaadin/framework/pull/12104x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2020-36320
Same Patch Batch · Vaadin · 2021-04-23 · 13 CVEs total
| CVE-2021-31407 | 8.6 HIGH | Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19 |
| CVE-2021-31410 | 8.6 HIGH | Project sources exposure in Vaadin Designer |
| CVE-2021-31405 | 7.5 HIGH | Regular expression denial of service (ReDoS) in EmailField component in Vaadin 14 and 15-1 |
| CVE-2021-31408 | 6.3 MEDIUM | Server session is not invalidated when logout() helper method of Authentication module is |
| CVE-2019-25027 | 6.1 MEDIUM | Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13 |
| CVE-2020-36321 | 5.9 MEDIUM | Directory traversal in development mode handler in Vaadin 14 and 15-17 |
| CVE-2019-25028 | 5.4 MEDIUM | Stored cross-site scripting in Grid component in Vaadin 7 and 8 |
| CVE-2021-31403 | 4.0 MEDIUM | Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8 |
| CVE-2021-31404 | 4.0 MEDIUM | Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18 |
| CVE-2021-31406 | 4.0 MEDIUM | Timing side channel vulnerability in endpoint request handler in Vaadin 15-19 |
| CVE-2020-36319 | 3.1 LOW | Potential sensitive data exposure in applications using Vaadin 15 |
| CVE-2018-25007 | 2.6 LOW | Unauthorized client-side property update in UIDL request handler in Vaadin 10 and 11 |
IV. Related Vulnerabilities
Same weakness: CWE-400
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SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
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V. Comments for CVE-2020-36320
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