CVE-2018-20981
CVE-2018-20981 is a critical-severity vulnerability in Ninjaforms Ninja Forms with a CVSS 3.x base score of 9.1. 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-20.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Ninjaforms Ninja Forms
- Published:
- Last modified:
Description
The ninja-forms plugin before 3.3.9 for WordPress has insufficient restrictions on submission-data retrieval during Export Personal Data requests.
Frequently asked questions
- What is CVE-2018-20981?
- The ninja-forms plugin before 3.3.9 for WordPress has insufficient restrictions on submission-data retrieval during Export Personal Data requests.
- How severe is CVE-2018-20981?
- CVE-2018-20981 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2018-20981 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20981?
- CVE-2018-20981 affects Ninjaforms Ninja Forms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20981?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-20981 published?
- CVE-2018-20981 was published on 2019-08-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:wordpress:*:*
More vulnerabilities in Ninjaforms Ninja Forms
- CVE-2025-9083 — Critical (CVSS 9.8): The Ninja Forms WordPress plugin before 3.11.1 unserializes user input via form field, which could allow…
- CVE-2016-1209 — Critical (CVSS 9.8): The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks…
- CVE-2024-25572 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability exists in Ninja Forms prior to 3.4.31. If a website administrator views…
- CVE-2021-24163 — High (CVSS 8.8): The AJAX action, wp_ajax_ninja_forms_sendwp_remote_install_handler, did not have a capability check on it, nor did it…
- CVE-2018-16308 — High (CVSS 8.6): The Ninja Forms plugin before 3.3.14.1 for WordPress allows CSV injection.
- CVE-2023-38393 — High (CVSS 7.6): Missing Authorization vulnerability in Saturday Drive Ninja Forms.This issue affects Ninja Forms: from n/a through…
All CVEs affecting Ninjaforms Ninja Forms →
Other CWE-20 (Improper Input Validation) vulnerabilities
- CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
- CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
- CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…
Browse all CWE-20 (Improper Input Validation) vulnerabilities →