Cyber Resilience

CVE-2025-26536

High

Published: 26 March 2025

Published
26 March 2025
Modified
23 April 2026
KEV Added
—
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-2025-26536 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-2025-26536 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the Yendif Player Another Events Calendar WordPress plugin (another-events-calendar). The issue impacts all versions from n/a through 1.7.0 inclusive, as published on 2025-03-26.

With 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), the vulnerability is exploitable over the network by unauthenticated attackers requiring low complexity and user interaction, such as clicking a malicious link. Exploitation changes the security scope, enabling limited impacts on confidentiality, integrity, and availability, such as executing scripts in the victim's browser context to steal session data or manipulate page content.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/another-events-calendar/vulnerability/wordpress-another-events-calendar-plugin-1-7-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve details the Reflected XSS vulnerability in the Another Events Calendar plugin version 1.7.0, providing guidance for practitioners on associated risks and potential mitigations.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Yendif Player Another Events Calendar another-events-calendar allows Reflected XSS.This issue affects Another Events Calendar: from n/a through <= 1.7.0.

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 enables delivery via crafted malicious links requiring user click (T1204.001) and execution of scripts to steal session data/cookies (T1539).

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

CVEs Like This One

CVE-2025-23587Shared CWE-79
CVE-2025-26584Shared CWE-79
CVE-2025-23602Shared CWE-79
CVE-2025-23619Shared CWE-79
CVE-2025-23540Shared CWE-79
CVE-2025-24708Shared CWE-79
CVE-2025-23475Shared CWE-79
CVE-2025-23770Shared CWE-79
CVE-2025-23699Shared CWE-79
CVE-2026-23973Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly remediates the reflected XSS flaw in the Another Events Calendar WordPress plugin by identifying, reporting, and applying patches within defined timeframes.

SI-15 Information Output Filtering good match
prevent

Filters information outputs from the plugin during web page generation to neutralize malicious scripts reflected in user inputs.

SI-10 Information Input Validation good match
prevent

Validates all inputs to the vulnerable plugin endpoints to prevent improper neutralization leading to XSS execution.

References