Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessIdentify site running Sonaar theme
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DeliveryCraft XSS payload for vulnerable parameter
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ExploitDeliver via link, comment, or referrer
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ExecutionVictim browser renders injected script
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PersistSteal session cookie or perform admin action
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ImpactEstablish persistence via new admin account
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires that the target WordPress site has the Sonaar theme installed and active at version 4.27.4 or earlier, and that a victim user interacts with attacker-controlled content (UI:R in CVSS) - typically clicking a crafted link, viewing an injected page, or loading a comment/profile field that reaches the vulnerable Sonaar template. No authentication is required from the attacker (PR:N), but the specific Sonaar feature, shortcode, or parameter that reflects unsanitized input is not disclosed in the available advisory data, so the exact entry point cannot be confirmed without consulting the Patchstack writeup. Maximum impact (admin takeover) further requires that the victim user be a logged-in WordPress administrator at the time of payload execution. |
| Impact | The CVSS 3.1 base score of 7.1 reflects network attack vector, low complexity, no privileges required, but mandatory user interaction (UI:R) combined with a scope change (S:C) and low partial impact across confidentiality, integrity, and availability - characteristic of stored/reflected XSS against WordPress sites. EPSS data was not provided in the input, and the vulnerability is not on CISA KEV, so there is no signal of mass automated exploitation; however, XSS against WordPress themes is a well-trodden path for credential and session theft and is often weaponized opportunistically once details are public. The Patchstack advisory exists but the input does not specify whether a POC is publicly published, so exploit maturity is uncertain. Overall this is a meaningful but not emergency-priority issue for sites running Sonaar - patch promptly but it is not on the same tier as RCE. |
| Exploit ScenarioDerived | An attacker crafts a malicious URL or comment containing a JavaScript payload targeting a vulnerable Sonaar-rendered parameter and lures a site administrator or visitor to click it (UI:R). When the page renders, the script executes in the victim's browser under the WordPress site's origin, allowing the attacker to steal session cookies, perform authenticated actions such as creating a new admin user, or pivot to backend WordPress compromise. |
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Alert meAnalysisAIv1 – Jun 17, 2026
Reflected or stored cross-site scripting in the Sonaar WordPress theme versions 4.27.4 and earlier allows remote unauthenticated attackers to inject malicious script into pages rendered to victims who follow a crafted link or interact with attacker-controlled content. The CVSS scope-change vector (S:C) indicates the injected script can impact resources beyond the vulnerable component, such as the WordPress admin session of a logged-in user. No public exploit identified at time of analysis, and the issue is not on CISA's KEV list.
RemediationAI
Upgrade the Sonaar theme to a version newer than 4.27.4 as published by the vendor; the exact fixed version is not stated in the provided intelligence, so consult the Patchstack advisory at https://patchstack.com/database/wordpress/theme/sonaar/vulnerability/wordpress-sonaar-theme-4-27-4-cross-site-scripting-xss-vulnerability and the Sonaar Music vendor changelog for the patched release identifier. As compensating controls while patching, deploy a web application firewall such as the Patchstack mTLS/vPatch service or Wordfence with rules that block reflected XSS payloads against theme endpoints, set a strict Content-Security-Policy header that disallows inline scripts (note this can break other themes/plugins that rely on inline JS), require administrators to use separate browser profiles to avoid session reuse, and audit any pages exposing Sonaar-rendered user input. Avoid temporarily switching themes only as a workaround unless a staging validation is performed, since theme changes can break widgets and customizations.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Sonaar is a commercial WordPress theme marketed to musicians, bands, and audio producers (CPE cpe:2.3:a:sonaar_music:sonaar). The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), meaning user-controlled input is reflected or stored into HTML output without proper output encoding or input sanitization. In a WordPress theme context this typically manifests in shortcodes, template parameters, search forms, comment fields, or AJAX endpoints exposed by the theme to unauthenticated visitors. Exploitation runs in the browser of the victim within the origin of the WordPress site, enabling theft of cookies, session tokens, or actions performed on behalf of an authenticated administrator if one is lured to the malicious payload.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Network-reachable WordPress theme, unauthenticated attacker, but requires victim click (UI:R); XSS escapes component scope (S:C) with partial C/I/A impact on victim session.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in Sonaar <= 4.27.4 versions.
Executive ViewAI
Sonaar WordPress theme (v4.27.4 and earlier) contains an unauthenticated cross-site scripting vulnerability allowing attackers to inject malicious scripts into pages visited by users. Because the vulnerability has a changed scope vector, injected scripts can compromise WordPress administrator sessions, enabling unauthorized access to site administration and user data for any organization running affected theme versions.
No vendor-released patch identified at time of analysis. Interim mitigations: Deploy WAF with XSS protection rules; enforce strict Content Security Policy headers restricting external scripts; implement input validation and output encoding on theme customization fields; restrict file upload permissions; enable WordPress security monitoring plugins to detect exploitation attempts; maintain enhanced logging of WordPress admin activity; consider reverting to prior unaffected theme version if available; restrict theme updates to verified administrative personnel only.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
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EUVD-2025-210221
NVD
CVE.org
EPSS
Vulnrichment
GitHub PoC
Exploit-DB