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» GHSA-42j4-733x-5vcf
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.
https://vaadin.com/security/cve-2020-36320
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
Open repository advisory ↗ Source code
Not specified Published (advisory)
2021-04-19 14:49:32 UTC
Updated
2024-05-15 06:27:11 UTC
GitHub reviewed
2021-04-16 23:15:27 UTC
NVD published
2021-04-23
EPSS Score
Score
Percentile
0.72%
72.50%
CVSS Scores
Base score
Version
Severity
Vector
7.5
3.1
—
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-400
Uncontrolled Resource Consumption
Affected packages (2)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
maven
com.vaadin:vaadin-bom >= 7.0.0.beta1, < 7.7.22
7.7.22
—
maven
com.vaadin:vaadin-server >= 7.0.0.beta1, < 7.7.22
7.7.22
—
cvelogic
Threat Intelligence