CVE-2024-56026
Published: 02 January 2025
Summary
CVE-2024-56026 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 34.4th 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-2024-56026 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Greg – SiteOrigin Simple Proxy plugin (simple-proxy) for WordPress. This issue affects all versions of the plugin from n/a through 1.0 inclusive. The vulnerability 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), indicating high severity due to its network accessibility and scope change.
Attackers can exploit this vulnerability remotely over the network with low complexity and no required privileges, though it necessitates user interaction such as clicking a malicious link. By crafting inputs that are improperly neutralized and reflected in generated web pages, an attacker can execute arbitrary scripts in the victim's browser context, achieving low impacts on confidentiality, integrity, and availability while changing the scope to affect the site's security context.
Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/simple-proxy/vulnerability/wordpress-simple-proxy-plugin-1-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-52924
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Greg – SiteOrigin Simple Proxy simple-proxy allows Reflected XSS.This issue affects Simple Proxy: from n/a through <= 1.0.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress plugin directly enables remote exploitation of web apps (T1190) and arbitrary JavaScript execution in browser (T1059.007).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly addresses improper neutralization during web page generation by filtering outputs from the Simple Proxy plugin to block reflected XSS script injection.
Validates untrusted inputs to the Simple Proxy plugin, preventing malicious payloads from being accepted and reflected as XSS in generated pages.
Remediates the specific reflected XSS flaw in Simple Proxy versions <=1.0 through timely identification, reporting, and patching.