Cyber Resilience

CVE-2025-22359

High

Published: 07 January 2025

Published
07 January 2025
Modified
23 April 2026
KEV Added
—
Patch
—
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 0.0024 47.7th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-22359 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 47.7th 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-2025-22359 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the SyncFields WordPress plugin developed by pjfc. The issue affects SyncFields versions from n/a through 2.1 inclusive and was published on 2025-01-07.

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, low attack complexity, no privileges required, and user interaction needed, with changed scope and low impacts to confidentiality, integrity, and availability. Remote attackers can exploit it by tricking authenticated or unauthenticated users into interacting with malicious input, such as a crafted link or payload reflected in web page generation, enabling script execution in the victim's browser context.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/syncfields/vulnerability/wordpress-syncfields-plugin-2-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pjfc SyncFields syncfields allows Reflected XSS.This issue affects SyncFields: from n/a through <= 2.1.

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?

Reflected XSS in public-facing WordPress plugin directly enables exploitation of the application (T1190) and arbitrary JavaScript execution in the victim browser (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-15 Information Output Filtering good match
prevent

Information Output Filtering directly prevents reflected XSS by encoding or filtering untrusted data reflected in web page generation.

SI-10 Information Input Validation good match
prevent

Information Input Validation neutralizes malicious inputs before they are processed and reflected in web pages, addressing the improper neutralization root cause.

SI-2 Flaw Remediation good match
prevent

Flaw Remediation ensures timely patching of the vulnerable SyncFields plugin versions to eliminate the XSS vulnerability.

References