CVE-2025-53233
Published: 20 February 2026
Summary
CVE-2025-53233 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 14.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Deeper analysis
CVE-2025-53233 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-Site Scripting (XSS) under CWE-79, affecting the Storyform WordPress plugin developed by RylanH. The issue impacts all versions of the plugin up to and including 0.6.14, where user input is not properly sanitized during web page generation, enabling malicious script injection.
The vulnerability has a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating it is exploitable over the network with low complexity and no authentication requirements, though it relies on user interaction such as clicking a malicious link. An unauthenticated attacker can craft and deliver payloads via reflected inputs, tricking victims into executing scripts in their browser context due to the changed scope (S:C). This allows limited impacts including low confidentiality (e.g., session data theft), integrity (e.g., script injection), and availability disruptions within the victim's session.
Patchstack has documented the vulnerability in its database for the WordPress Storyform plugin version 0.6.14, providing details on the XSS issue; security practitioners should consult this advisory at https://patchstack.com/database/Wordpress/Plugin/storyform/vulnerability/wordpress-storyform-plugin-0-6-14-cross-site-scripting-xss-vulnerability?_s_id=cve for recommended mitigations, such as updating to a patched version beyond 0.6.14.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-207577
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in RylanH Storyform storyform allows Reflected XSS.This issue affects Storyform: from n/a through <= 0.6.14.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress plugin directly enables exploitation of web application (T1190) and arbitrary JavaScript execution in victim browser (T1059.007).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation and sanitization of all inputs before web page generation, directly blocking the unsanitized reflected parameters that enable CVE-2025-53233 XSS payloads.
Mandates filtering of information outputs to remove or neutralize script content, preventing malicious reflected XSS from executing in the victim's browser context.
Provides mechanisms to detect and block malicious code (including injected scripts) delivered via network inputs, mitigating the unauthenticated reflected XSS vector in the Storyform plugin.