CVE-2025-23866
Published: 22 January 2025
Summary
CVE-2025-23866 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 Malicious Link (T1204.001); ranked at the 43.0th 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-2025-23866 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the EU DSGVO Helper WordPress plugin by E. Marten. The issue affects all versions of the plugin from unknown initial release through 1.0.6.1 inclusive. Published on 2025-01-22, it carries 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).
An unauthenticated remote attacker can exploit this vulnerability over the network with low attack complexity, though it requires user interaction such as following a malicious link. Exploitation results in a change of scope, enabling low-level impacts on confidentiality, integrity, and availability, potentially allowing arbitrary script execution in the context of the affected web page.
The Patchstack advisory provides details on this WordPress plugin vulnerability, accessible at https://patchstack.com/database/Wordpress/Plugin/dsgvo/vulnerability/wordpress-eu-dsgvo-helper-plugin-1-0-6-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve, including guidance on mitigation and patching.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-3487
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in E. Marten EU DSGVO Helper dsgvo allows Reflected XSS.This issue affects EU DSGVO Helper: from n/a through <= 1.0.6.1.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS vulnerability directly triggered by user following a malicious link, enabling arbitrary script execution in the browser.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates the CVE by requiring identification, reporting, and correction of the reflected XSS flaw in the EU DSGVO Helper WordPress plugin through timely patching.
Prevents reflected XSS exploitation by enforcing validation of user inputs, addressing the improper neutralization of input during web page generation in the vulnerable plugin.
Mitigates reflected XSS by filtering and encoding information outputs before inclusion in web pages, countering the script injection in the affected plugin.