Is CVE-2019-11340 in the CISA KEV catalog?

No. CVE-2019-11340 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-11340?

CVE-2019-11340 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2019-11340?

CVE-2019-11340 has an EPSS score of 1.86% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-11340?

Upgrade sydent to 1.0.2 or later.

CVE & CISA-KEV Catalog

CVE-2019-11340

MEDIUMEPSS 77th pctl

5.9

CVSS v3

NVD

Description

util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parseaddr call on [email protected]@good.example.com returns the [email protected] substring.

CWE-20Improper Input Validation

How to fix

Remediation Available

sydentNVD

Affected:< 1.0.2Fixed in:1.0.2CVE-2019-11340derived 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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

1.86%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch2

Vendor Advisory1

matrix.org

Third-Party Advisory1

twitter.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	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.