Is CVE-2023-4479 in the CISA KEV catalog?

No. CVE-2023-4479 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-4479?

CVE-2023-4479 has a CVSS v3 base score of 7.3 (HIGH).

What is the EPSS score for CVE-2023-4479?

CVE-2023-4479 has an EPSS score of 0.44% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4479?

Upgrade m-files to 23.8 or later.

CVE & CISA-KEV Catalog

CVE-2023-4479

HIGH

7.3

CVSS v3

NVD

Description

Stored XSS Vulnerability in M-Files Web versions before 23.8 allows attacker to execute script on users browser via stored HTML document within limited time period.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

m-filesNVD

Affected:< 23.8Fixed in:23.8CVE-2023-4479derived 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 RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.44%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Vendor Advisory2

Other references1

empower.m-files.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	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 2026-02-23.