Is CVE-2021-31405 in the CISA KEV catalog?

No. CVE-2021-31405 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-31405?

CVE-2021-31405 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-31405?

CVE-2021-31405 has an EPSS score of 1.13% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-31405?

Upgrade flow to 4.0.3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-31405

HIGH

7.5

CVSS v3

NVD

Description

Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.3.2 (Vaadin 14.0.6 through 14.4.3), and 3.0.0 through 4.0.2 (Vaadin 15.0.0 through 17.0.10) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

CWE-400Resource Exhaustion

How to fix

Remediation Available

flowNVD

Affected:>= 3.0.0, < 4.0.3Fixed in:4.0.3CVE-2021-31405derived from NVD

vaadinNVD

Affected:>= 15.0.0, < 17.0.11Fixed in:17.0.11CVE-2021-31405derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.13%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

vaadin.com

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.