Cyber Resilience

CVE-2025-23826

High

Published: 16 January 2025

Published
16 January 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 0.0034 57.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-23826 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 Exploit Public-Facing Application (T1190); ranked in the top 42.6% of CVEs by exploit likelihood; 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-2025-23826 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Stored Cross-site Scripting (XSS) under CWE-79, in the WordPress plugin Stop Comment Spam by pedjas (stop-comment-spam). The issue affects all versions from n/a through 0.5.3.

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 can be exploited over the network with low attack complexity by unauthenticated attackers (PR:N), though it requires user interaction such as an administrator viewing a maliciously crafted page. Successful exploitation changes scope (S:C) via CSRF-to-stored XSS, enabling limited impacts on confidentiality, integrity, and availability, such as script execution in the victim's browser context.

Patchstack has published details on the vulnerability, including the CSRF-to-stored XSS vector in Stop Comment Spam version 0.5.3, available at https://patchstack.com/database/Wordpress/Plugin/stop-comment-spam/vulnerability/wordpress-stop-comment-spam-plugin-0-5-3-csrf-to-stored-xss-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pedjas Stop Comment Spam stop-comment-spam allows Stored XSS.This issue affects Stop Comment Spam: from n/a through <= 0.5.3.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

The CVE describes a stored XSS vulnerability in a public-facing WordPress plugin, directly enabling exploitation of the web application over the network.

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

CVEs Like This One

CVE-2021-47873Shared CWE-79
CVE-2026-7052Shared CWE-79
CVE-2024-56060Shared CWE-79
CVE-2025-49043Shared CWE-79
CVE-2026-40038Shared CWE-79
CVE-2024-56022Shared CWE-79
CVE-2025-68889Shared CWE-79
CVE-2026-1074Shared CWE-79
CVE-2025-22539Shared CWE-79
CVE-2025-22286Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly addresses the improper neutralization of input by validating and sanitizing user inputs before storage, preventing stored XSS payloads in the WordPress plugin.

SI-15 Information Output Filtering good match
prevent

Filters and encodes information output during web page generation to block execution of malicious scripts when administrators view affected pages.

SI-2 Flaw Remediation good match
prevent

Requires timely patching of the vulnerable Stop Comment Spam plugin versions up to 0.5.3 to remediate the stored XSS flaw.

References