CVE-2025-26584

High

Published: 26 March 2025

Published

26 March 2025

Modified

23 April 2026

KEV Added

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Patch

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CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

EPSS Score 0.0011 29.9th percentile

Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-26584 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 29.9th 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-2025-26584 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the TBTestimonials WordPress plugin (tb-testimonials) developed by Travis Ballard. This issue affects all versions of the plugin from n/a through 1.7.3 inclusive. The vulnerability was published on 2025-03-26 and 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).

Attackers can exploit this vulnerability remotely over the network with low attack complexity and no required privileges, though it demands user interaction such as clicking a malicious link. Exploitation enables limited impacts on confidentiality, integrity, and availability within a changed scope, potentially allowing attackers to inject and execute arbitrary scripts in the context of a victim's browser session.

The Patchstack advisory provides further details on the vulnerability, including mitigation guidance, at https://patchstack.com/database/Wordpress/Plugin/tb-testimonials/vulnerability/wordpress-tbtestimonials-plugin-1-7-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-8161

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Travis Ballard TBTestimonials tb-testimonials allows Reflected XSS.This issue affects TBTestimonials: from n/a through <= 1.7.3.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1204.001 Malicious Link Execution

An adversary may rely upon a user clicking a malicious link in order to gain execution.

attack.mitre.org →

T1539 Steal Web Session Cookie Credential Access

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.

attack.mitre.org →

Why these techniques?

Reflected XSS is triggered by a malicious link and enables arbitrary JavaScript execution in the victim's browser session, directly facilitating session cookie theft.

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