CVE Feed

    Dashboard / CVE / CVE-2026-15256

    CVE-2026-15256

    The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.

    Published:Aug 6, 2026
    Last Modified:Aug 7, 2026
    EPS:Aug 6, 2026
    EPSS Score:0.00188
    CVSS Score:4.8

    Affected Products

    Vendor
    Ninjaforms
    Product
    Ninja Forms
    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-105 HTTP Request Splitting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-273 HTTP Response Smuggling
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-34 HTTP Response Splitting
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-51 Poison Web Service Registry
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-6 Argument Injection
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-83 XPath Injection
    CAPEC-84 XQuery Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-80437 (CVSS 4.8) — The Ninja Forms WordPress plugin from 3.14.10 before 3.15.2 does not prevent shortcodes in request-derived val…
    CVE-2026-80438 (CVSS 5.9) — The Ninja Forms WordPress plugin before 3.15.2 does not restrict its REST abilities to administrators, accept…
    CVE-2026-65052 (CVSS 8.7) — Ninja Forms WordPress plugin version 3.14.8 and prior contains an improper input validation vulnerability that…
    CVE-2026-65051 (CVSS 6.9) — Ninja Forms WordPress plugin version 3.14.8 contains a client-side enforcement of server-side security vulnera…
    CVE-2026-65050 (CVSS 7.1) — Ninja Forms WordPress plugin version 3.14.8 and prior contains a missing authorization vulnerability in the re…
    CVE-2026-65049 (CVSS 8.4) — Ninja Forms plugin version 3.14.8 and prior for WordPress Multisite contains an incorrect authorization vulner…
    CVE-2026-65048 (CVSS 9.3) — Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site …
    CVE-2025-14072 (CVSS 5.3) — The Ninja Forms WordPress plugin before 3.13.3 allows unauthenticated attackers to generate valid access toke…
    CVE-2025-11924 (CVSS 7.5) — The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Insecure …
    CVE-2025-10498 (CVSS 4.3) — The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Cross-Sit…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High