Unauthenticated XSS in Sonaar MP3 Audio Player Plugin

Unauthenticated Cross Site Scripting (XSS) in MP3 Audio Player for Music, Radio & Podcast by Sonaar <= 5.13.1 versions.

Casky was already ahead

This CVE exploits attack patterns that Casky's 323matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

This vulnerability is an unauthenticated Cross-Site Scripting (XSS) flaw affecting Sonaar's MP3 Audio Player for Music, Radio & Podcast plugin in versions 5.13.1 and earlier. XSS vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users, potentially stealing session tokens, credentials, or sensitive data without requiring authentication. This is particularly dangerous because it can affect any visitor to a site running the vulnerable plugin, making WordPress installations using Sonaar exposed to widespread compromise. The high CVSS score of 7.1 reflects the ease of exploitation and significant impact on confidentiality and integrity.

Casky's 323 mapped security skills, powered by Claude AI's extended reasoning capabilities, detect the attack patterns behind this XSS vulnerability across MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky would identify findings related to CWE-79 input validation failures, uncovering how attackers craft malicious payloads to execute in victim browsers. The platform's skills would surface detection patterns for script injection vectors, unsanitized user input flows, and exploitation attempts targeting the plugin's audio player functionality. Security teams would see findings highlighting vulnerable endpoints accepting unvalidated parameters, allowing them to prioritize remediation of input handling mechanisms before malicious actors can establish persistence or move laterally within affected WordPress environments.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

323 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-81289.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-81289

Casky has 323 skills that investigate the attack patterns behind CVE-2026-81289. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn