CVE-2024-43999: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in S

Q: How do I fix CVE-2024-43999?

ninja forms: upgrade to 3.8.12. Exact commands for each OS are on this page.

Q: Is CVE-2024-43999 being exploited?

CVE-2024-43999 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-43999 affect?

CVE-2024-43999 affects ninja forms. Severity is medium (CVSS 5.9). 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.

Q: How urgent is CVE-2024-43999?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2024-43999 is a medium-severity flaw (CVSS 5.9) affecting ninja forms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-09-18
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: ninjaforms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-09-18 00:15 UTCPublished CVE record published
2026-06-17 07:52 UTCUpdated Record last modified

ninjaforms ninja forms UPGRADE

Affected: < 3.8.12

Fixed in: 3.8.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ninja-forms || rpm -q ninja-forms || ninja-forms --version

2. UPGRADE to 3.8.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ninja-forms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ninja-forms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-43999?

ninja forms: upgrade to 3.8.12. Exact commands for each OS are on this page.

Is CVE-2024-43999 being exploited?

CVE-2024-43999 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-43999 affect?

CVE-2024-43999 affects ninja forms. Severity is medium (CVSS 5.9). 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 urgent is CVE-2024-43999?

Priority 27/100. No elevated risk signals yet.

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References

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