CVE-2026-28113

High

Published: 05 March 2026

Published

05 March 2026

Modified

22 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 0.0004 14.4th percentile

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

Summary

CVE-2026-28113 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 Drive-by Compromise (T1189); ranked at the 14.4th 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-2026-28113 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the azzaroco Ultimate Learning Pro (also known as indeed-learning-pro) WordPress plugin. This issue affects all versions of the plugin from n/a through 3.9.1, as published on 2026-03-05.

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 network accessibility with low attack complexity, no required privileges, and user interaction needed. Remote attackers without authentication can exploit it by crafting malicious payloads delivered via reflected inputs, such as links or forms, tricking authenticated users into interacting with them on affected sites. Exploitation enables script execution in the victim's browser context, with changed scope potentially allowing low-level impacts on confidentiality, integrity, and availability, such as session hijacking or data theft.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/indeed-learning-pro/vulnerability/wordpress-ultimate-learning-pro-plugin-3-9-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-9766

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in azzaroco Ultimate Learning Pro indeed-learning-pro allows Reflected XSS.This issue affects Ultimate Learning Pro: from n/a through <= 3.9.1.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1189 Drive-by Compromise Initial Access

Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.

attack.mitre.org →

T1204.001 Malicious Link Execution

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

attack.mitre.org →

Why these techniques?

Reflected XSS enables crafted malicious links (reflected inputs) that execute JS in the victim's browser upon interaction, directly mapping to drive-by compromise via web content and user execution of malicious links.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1