CVE-2025-28934
Published: 26 March 2025
Summary
CVE-2025-28934 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 Exploitation for Client Execution (T1203); ranked at the 42.8th 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
SI-15 mandates filtering of information output before rendering in web pages, directly preventing reflected XSS by neutralizing malicious scripts from user input.
SI-10 requires validation of inputs at entry points, blocking malicious payloads that could be reflected as XSS in the WordPress plugin.
SI-2 ensures timely patching and flaw remediation for known vulnerabilities like this reflected XSS in Simple Post Series up to version 2.4.4.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The reflected XSS vulnerability allows arbitrary JavaScript execution in the victim's browser when a maliciously crafted link is interacted with, directly enabling exploitation for client execution (T1203) and facilitating delivery via spearphishing links (T1566.002).
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in chaozh Simple Post Series simple-post-series allows Reflected XSS.This issue affects Simple Post Series: from n/a through <= 2.4.4.
Deeper analysisAI
CVE-2025-28934 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the chaozh Simple Post Series WordPress plugin (simple-post-series). This issue affects all versions of the plugin from n/a through 2.4.4 inclusive. The vulnerability was published on 2025-03-26.
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, but user interaction needed, with a changed scope and low impacts to confidentiality, integrity, and availability. Remote attackers can exploit it by tricking authenticated or unauthenticated users into interacting with maliciously crafted input, such as via a phishing link, leading to arbitrary JavaScript execution in the victim's browser context.
The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/simple-post-series/vulnerability/wordpress-simple-post-series-plugin-2-4-4-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve) documents this Reflected XSS vulnerability in Simple Post Series version 2.4.4, recommending mitigation through updating to a version beyond 2.4.4 where the issue is addressed.
Details
- CWE(s)