How severe is CVE-2024-43999?

CVE-2024-43999 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2024-43999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-43999?

CVE-2024-43999 affects Ninjaforms Ninja Forms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-43999?

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

Does CVE-2024-43999 have an EU (EUVD) identifier?

Yes. CVE-2024-43999 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40648.

When was CVE-2024-43999 published?

CVE-2024-43999 was published on 2024-09-18 and last updated on 2026-06-17.

CVE-2024-43999

CVE-2024-43999 is a medium-severity vulnerability in Ninjaforms Ninja Forms with a CVSS 3.x base score of 5.9. 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: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-40648
Weakness: CWE-79
Affected product: Ninjaforms Ninja Forms
Published: 2024-09-18
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Saturday Drive Ninja Forms allows Stored XSS.This issue affects Ninja Forms: from n/a through 3.8.11.

Frequently asked questions

What is CVE-2024-43999?: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Saturday Drive Ninja Forms allows Stored XSS.This issue affects Ninja Forms: from n/a through 3.8.11.
How severe is CVE-2024-43999?: CVE-2024-43999 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2024-43999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-43999?: CVE-2024-43999 affects Ninjaforms Ninja Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-43999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-43999 have an EU (EUVD) identifier?: Yes. CVE-2024-43999 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40648.
When was CVE-2024-43999 published?: CVE-2024-43999 was published on 2024-09-18 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/ninja-forms/wordpress-ninja-forms-plugin-3-8-11-cross-site-scripting-xss-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:wordpress:*:*

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