How severe is CVE-2021-4431?

CVE-2021-4431 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-4431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4431?

CVE-2021-4431 affects Msyk Fmdataapi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4431?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-4431 published?

CVE-2021-4431 was published on 2023-11-07 and last updated on 2026-06-17.

CVE-2021-4431

CVE-2021-4431 is a low-severity vulnerability in Msyk Fmdataapi with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Msyk Fmdataapi
Published: 2023-11-07
Last modified: 2026-06-17

Description

A vulnerability classified as problematic has been found in msyk FMDataAPI up to 22. Affected is an unknown function of the file FMDataAPI_Sample.php. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 23 is able to address this issue. The patch is identified as 3bd1709a8f7b1720529bf5dfc9855ad609f436cf. It is recommended to upgrade the affected component. VDB-244494 is the identifier assigned to this vulnerability.

Frequently asked questions

What is CVE-2021-4431?: A vulnerability classified as problematic has been found in msyk FMDataAPI up to 22. Affected is an unknown function of the file FMDataAPI_Sample.php. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 23 is able to address this issue. The patch is identified as 3bd1709a8f7b1720529bf5dfc9855ad609f436cf. It is recommended to upgrade the affected component. VDB-244494 is the identifier assigned to this vulnerability.
How severe is CVE-2021-4431?: CVE-2021-4431 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-4431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4431?: CVE-2021-4431 affects Msyk Fmdataapi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4431 published?: CVE-2021-4431 was published on 2023-11-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:msyk:fmdataapi:*:*:*:*:*:*:*:*

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