CVE-2025-67927
Published: 08 January 2026
Summary
CVE-2025-67927 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 7.3th 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-2025-67927 is an improper neutralization of input during web page generation vulnerability, enabling reflected cross-site scripting (XSS) as defined by CWE-79. It affects the Link Whisper Free WordPress plugin (slug: link-whisper) developed by Spencer Haws, impacting all versions from an unspecified initial release through 0.8.8. Published on 2026-01-08, the issue 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 high severity due to network accessibility, low attack complexity, and changed scope.
Unauthenticated attackers (PR:N) can exploit this vulnerability over the network (AV:N) with low complexity (AC:L) by crafting a malicious URL containing an XSS payload. Exploitation requires user interaction (UI:R), such as a site administrator or authenticated user clicking a phishing link or visiting a tainted page, causing the payload to reflect and execute in the victim's browser. Successful attacks enable low-impact effects on confidentiality (e.g., limited data exposure like session tokens), integrity (e.g., minor script injection), and availability (e.g., brief denial via resource consumption), amplified by the changed scope (S:C) to affect the site's context.
The Patchstack advisory documents this vulnerability in the WordPress Link Whisper Free plugin 0.8.8 at https://patchstack.com/database/Wordpress/Plugin/link-whisper/vulnerability/wordpress-link-whisper-free-plugin-0-8-8-cross-site-scripting-xss-vulnerability?_s_id=cve, providing details for security practitioners to assess mitigation, such as plugin updates or input sanitization.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1552
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spencer Haws Link Whisper Free link-whisper allows Reflected XSS.This issue affects Link Whisper Free: from n/a through <= 0.8.8.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS via crafted malicious URL in public-facing WordPress plugin directly maps to exploiting public-facing app (T1190); attack delivered as spearphishing link (T1566.002) requiring user execution of malicious link (T1204.001).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of all inputs before web page generation, blocking the unneutralized reflected XSS payload in the Link Whisper plugin.
Requires filtering of all outputs to remove dangerous script content, preventing the reflected XSS from executing in the victim's browser context.
Provides mechanisms to detect and block malicious script payloads delivered via crafted URLs before they reach the WordPress application.