CVE-2025-26564
Published: 26 March 2025
Summary
CVE-2025-26564 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 29.3th 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-2025-26564 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the GNUCommerce WordPress plugin. This issue impacts all versions from n/a through 1.5.4, allowing malicious input to be insufficiently sanitized and reflected back in dynamically generated web pages.
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 attack complexity, no required privileges, but necessitating user interaction. Remote attackers can craft and deliver malicious payloads via user-supplied input, such as URLs or form data, tricking authenticated users into triggering the reflection. Successful exploitation executes arbitrary JavaScript in the victim's browser context within the site's scope, enabling potential theft of session cookies, account takeover, or site defacement with low impacts on confidentiality, integrity, and availability, amplified by the changed scope.
Mitigation details are available in advisories like the Patchstack database entry at https://patchstack.com/database/Wordpress/Plugin/gnucommerce/vulnerability/wordpress-gnucommerce-plugin-1-5-4-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve, which documents the vulnerability in the context of the WordPress gnucommerce plugin version 1.5.4.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-8170
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in kagla GNUCommerce gnucommerce allows Reflected XSS.This issue affects GNUCommerce: from n/a through <= 1.5.4.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The reflected XSS vulnerability allows exploitation of a public-facing WordPress plugin via malicious reflected input (T1190) and enables arbitrary JavaScript execution in the victim's browser context (T1059.007).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-15 mandates filtering of information outputs, directly preventing reflected XSS by neutralizing malicious input reflected in dynamically generated web pages.
SI-10 requires validation of user-supplied inputs such as URLs or form data, blocking malicious XSS payloads before they can be processed and reflected.
SI-2 ensures timely identification, reporting, and correction of flaws like this XSS vulnerability in the GNUCommerce WordPress plugin through patching.