What is the CVSS score of EUVD-2026-15669?

EUVD-2026-15669 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Nooni are affected by EUVD-2026-15669?

A reflected XSS vulnerability in skygroup Nooni theme versions below 1.5.1 allows attackers to execute malicious scripts in user browsers through crafted URLs, creating risk of session hijacking and…. A patch is available.

How to fix or mitigate EUVD-2026-15669?

Within 24 hours: Identify all web applications using skygroup Nooni theme and document current versions. Within 7 days: Upgrade all Nooni theme installations to version 1.5.1 or later. Within 30 days: Conduct security awareness training for end-users on phishing risks involving malicious URLs, and implement content security policy (CSP) headers as defense-in-depth on all affected web properties.

Nooni EUVD-2026-15669

| CVE-2026-25353 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-03-25 Patchstack

XSS Nooni

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Re-analysis Queued

Apr 24, 2026 - 16:37 vuln.today

cvss_changed

Analysis Updated

Apr 16, 2026 - 06:15 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

1.5.1

EUVD ID Assigned

Mar 25, 2026 - 16:47 euvd

EUVD-2026-15669

Analysis Generated

Mar 25, 2026 - 16:47 vuln.today

CVE Published

Mar 25, 2026 - 16:14 nvd

HIGH 7.1

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in skygroup Nooni nooni allows Reflected XSS.This issue affects Nooni: from n/a through < 1.5.1.

AnalysisAI

A Reflected Cross-Site Scripting (XSS) vulnerability exists in the skygroup Nooni theme affecting versions prior to 1.5.1, allowing attackers to inject malicious scripts into web pages viewed by users. The vulnerability stems from improper neutralization of user input during web page generation, classified as CWE-79. Attackers can craft malicious URLs containing JavaScript payloads that execute in the context of a victim's browser when the link is visited, potentially leading to session hijacking, credential theft, or malware distribution.

Technical ContextAI

The Nooni theme (identified via CPE cpe:2.3:a:skygroup:nooni:*:*:*:*:*:*:*:*) is a WordPress theme that fails to properly sanitize and escape user-supplied input before rendering it in HTML responses. This is a classic Reflected XSS vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation), where untrusted data from HTTP request parameters is directly inserted into the page without adequate validation or output encoding. The vulnerability likely affects theme template files that process query parameters, form submissions, or other user-controllable inputs without implementing proper input validation, output encoding, or Content Security Policy (CSP) protections. WordPress themes typically interact with the wp_kses() function for sanitization and esc_html() or similar escaping functions for output, which appear to be missing or improperly applied in affected versions.

RemediationAI

Upgrade the Nooni theme to version 1.5.1 or later immediately. The patch is available through the official WordPress theme repository or the theme vendor's distribution channel. Until patching is completed, website administrators should implement the following compensating controls: enable WordPress security plugins that filter malicious input patterns, implement a Web Application Firewall (WAF) configured to block common XSS payloads in query parameters, enforce a strict Content Security Policy (CSP) header limiting script execution to trusted sources, and disable the vulnerable theme from receiving traffic by temporarily switching to a patched theme. Additionally, audit access logs for signs of XSS exploitation attempts and consider implementing HTTP-only and Secure flags on session cookies to limit exposure if session hijacking is attempted. Refer to the Patchstack advisory (https://patchstack.com/database/Wordpress/Theme/nooni/vulnerability/wordpress-nooni-theme-1-5-1-reflected-cross-site-scripting-xss-vulnerability) for official patch notes and verification of successful remediation.