What is the CVSS score of EUVD-2026-13089?

EUVD-2026-13089 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Ryan Howard Website LLMs.Txt are affected by EUVD-2026-13089?

A reflected XSS vulnerability in the Website LLMs.Txt WordPress plugin (versions through 8.2.6) allows attackers to inject malicious scripts that execute in users' browsers, potentially leading to…

How to fix or mitigate EUVD-2026-13089?

Within 24 hours: Inventory all WordPress installations using Website LLMs.Txt plugin and document affected versions; assess user exposure by reviewing traffic logs and user roles. Within 7 days: Disable the Website LLMs.Txt plugin across all environments or immediately upgrade to a patched version if released; implement WAF rules to block malicious script injection patterns targeting this plugin. Within 30 days: Conduct security awareness training for users on phishing risks; audit logs for suspicious activity; establish monitoring for XSS exploitation attempts; develop a vulnerability management process to track patch availability.

Ryan Howard Website LLMs.Txt EUVD-2026-13089

| CVE-2026-27068 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-03-19 audit@patchstack.com

XSS

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Re-analysis Queued

Apr 23, 2026 - 16:12 vuln.today

cvss_changed

EUVD ID Assigned

Mar 19, 2026 - 09:22 euvd

EUVD-2026-13089

Analysis Generated

Mar 19, 2026 - 09:22 vuln.today

CVE Published

Mar 19, 2026 - 09:16 nvd

HIGH 7.1

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ryan Howard Website LLMs.Txt allows Reflected XSS.This issue affects Website LLMs.Txt: from n/a through 8.2.6.

AnalysisAI

A reflected cross-site scripting (XSS) vulnerability exists in the Website LLMs.Txt WordPress plugin through version 8.2.6, allowing remote attackers to inject malicious scripts into web pages viewed by users. The vulnerability requires user interaction (UI:R) but no authentication (PR:N) and can be exploited over the network with low complexity (AC:L). With a CVSS score of 7.1 and changed scope (S:C), this represents a medium-to-high severity issue that could lead to session hijacking, credential theft, or malicious actions performed in the context of victim users.

Technical ContextAI

This vulnerability is rooted in CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically a reflected XSS flaw. The Website LLMs.Txt plugin for WordPress fails to properly sanitize user-supplied input before reflecting it back in HTTP responses, allowing attackers to inject arbitrary JavaScript or HTML code. Reflected XSS occurs when malicious input is immediately returned by a web application without proper encoding or validation, typically through URL parameters or form submissions. The affected product is a WordPress plugin developed by Ryan Howard that appears to manage LLMs.txt files for websites, and the lack of input validation in version 8.2.6 and earlier creates an exploitable condition when processing user-controlled data.

RemediationAI

Users of the Website LLMs.Txt plugin should immediately upgrade to a patched version newer than 8.2.6 if available from the plugin developer or WordPress plugin repository. Consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/website-llms-txt/vulnerability/wordpress-website-llms-txt-plugin-8-2-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve for specific patch availability and version information. If an updated version is not yet available, consider temporarily disabling the plugin until a fix is released, especially on production sites with sensitive user data or authenticated operations. As a defense-in-depth measure, implement Content Security Policy (CSP) headers to mitigate XSS impact, enable WordPress security plugins that provide XSS filtering, and educate users about the risks of clicking untrusted links. Web application firewalls (WAF) with XSS detection rules can provide additional protection while awaiting vendor patches.