CVE-2026-27353
Published: 05 March 2026
Summary
CVE-2026-27353 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 Drive-by Compromise (T1189); ranked at the 11.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS enables crafting malicious links to the vulnerable public site; user interaction with the reflected payload executes arbitrary browser scripts, directly mapping to drive-by compromise and malicious link user execution.
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Grand News grandnews allows Reflected XSS.This issue affects Grand News: from n/a through <= 3.4.3.
Deeper analysisAI
CVE-2026-27353 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Grand News WordPress theme by ThemeGoods. This issue affects Grand News versions from an unspecified starting point through 3.4.3. The vulnerability was published on 2026-03-05.
The CVSS v3.1 base score is 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 required privileges, user interaction needed, and changed scope with low impacts to confidentiality, integrity, and availability. Remote attackers without authentication can exploit it by tricking users into interacting with malicious input reflected in web pages generated by the theme.
Advisories and mitigation details are documented by Patchstack at https://patchstack.com/database/Wordpress/Theme/grandnews/vulnerability/wordpress-grand-news-magazine-newspaper-wordpress-theme-3-4-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.
Details
- CWE(s)