Cyber Posture

CVE-2025-26589

High

Published: 03 March 2025

Published
03 March 2025
Modified
23 April 2026
KEV Added
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Patch
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CVSS Score 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0021 42.8th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Description

Adversaries may abuse various implementations of JavaScript for execution.

Security Summary

CVE-2025-26589 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the IE CSS3 Support WordPress plugin by Cristopher Dino. The ie-css3-support plugin is affected in all versions from n/a through 2.0.1.

Unauthenticated attackers can exploit this vulnerability over the network (AV:N) with low attack complexity (AC:L), requiring user interaction (UI:R) such as clicking a malicious link. Exploitation enables execution of arbitrary scripts in the victim's browser context with changed scope (S:C), resulting in low impacts to confidentiality, integrity, and availability (C:L/I:L/A:L), as scored at CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L).

The Patchstack advisory provides details on mitigation for this vulnerability in the IE CSS3 Support plugin version 2.0.1: https://patchstack.com/database/Wordpress/Plugin/ie-css3-support/vulnerability/wordpress-ie-css3-support-plugin-2-0-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

Details

CWE(s)
CWE-79

MITRE ATT&CK Enterprise Techniques

T1204.001 Malicious Link Execution
An adversary may rely upon a user clicking a malicious link in order to gain execution.
attack.mitre.org →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
Why these techniques?

Reflected XSS in public-facing WordPress plugin enables crafting malicious links for user-triggered arbitrary JavaScript execution in browser context.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References