Cyber Resilience

CVE-2025-23760

High

Published: 16 January 2025

Published
16 January 2025
Modified
28 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 0.0014 33.8th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-23760 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 at the 33.8th 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-2025-23760 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Stored Cross-site Scripting (XSS) under CWE-79, in the Alex Volkov Chatter WordPress plugin. This issue affects Chatter versions from n/a through 1.0.1. The vulnerability was published on 2025-01-16 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).

Unauthenticated attackers can exploit this vulnerability over the network with low attack complexity and no required privileges, though it requires user interaction. Exploitation typically involves tricking a user, such as a site administrator, into performing an action that leads to stored malicious input, enabling XSS execution when affected pages are viewed. This results in low impacts on confidentiality, integrity, and availability, but with a changed scope that elevates the overall severity.

The Patchstack advisory at https://patchstack.com/database/wordpress/plugin/chatter/vulnerability/wordpress-chatter-plugin-1-0-1-csrf-to-stored-xss-vulnerability?_s_id=cve details the CSRF-to-Stored XSS vector in Chatter version 1.0.1 and serves as a primary reference for mitigation guidance.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Alex Volkov Chatter allows Stored XSS. This issue affects Chatter: from n/a through 1.0.1.

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 →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
Why these techniques?

Stored XSS in public-facing WordPress plugin directly enables exploitation of web applications (T1190) and arbitrary JavaScript execution in victim browsers (T1059.007).

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

CVEs Like This One

CVE-2026-3231Shared CWE-79
CVE-2025-23481Shared CWE-79
CVE-2025-69302Shared CWE-79
CVE-2025-23734Shared CWE-79
CVE-2025-23571Shared CWE-79
CVE-2025-65110Shared CWE-79
CVE-2026-24948Shared CWE-79
CVE-2025-27352Shared CWE-79
CVE-2025-30349Shared CWE-79
CVE-2026-3876Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly enforces validation of user inputs to prevent improper neutralization leading to stored XSS payloads in the Chatter plugin.

SI-15 Information Output Filtering good match
prevent

Filters information outputs during web page generation to neutralize malicious scripts and block XSS execution when affected pages are viewed.

SI-2 Flaw Remediation good match
prevent

Requires timely identification, reporting, and correction of the specific flaw in Chatter versions through 1.0.1 to remediate the stored XSS vulnerability.

References