CVE-2025-26587
Published: 03 March 2025
Description
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
Security Summary
CVE-2025-26587 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the nghorta sidebarTabs (sidebartabs) WordPress plugin. This issue impacts all versions from n/a through 3.1 inclusive. 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 high severity due to network accessibility, low attack complexity, no required privileges, user interaction, and changed scope with low impacts across confidentiality, integrity, and availability.
Remote attackers without authentication can exploit this Reflected XSS by crafting malicious input that reflects back to users, typically via tricking victims into interacting with a malicious link or payload on a site running the vulnerable plugin. Exploitation executes arbitrary JavaScript in the victim's browser context, enabling potential theft of session cookies, keystroke logging, or page manipulation, though impacts remain low per the CVSS metrics.
The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/sidebartabs/vulnerability/wordpress-sidebartabs-plugin-3-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve) documents this Reflected XSS vulnerability specifically in the WordPress sidebarTabs plugin up to version 3.1.
Details
- CWE(s)
MITRE ATT&CK Enterprise Techniques
Why these techniques?
Reflected XSS enables arbitrary JS execution in browser, directly facilitating keylogging (T1056.001), browser session hijacking (T1185), and stealing web session cookies (T1539) as described in the CVE impacts.