WaveSurfer-WP <= 2.8.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'src' Shortcode Attribute

2026-02-05 18:34

Ivan Cese

Strategic Overview

Status

Patched in 2.8.4

Affected PluginWaveSurfer-WP

Affected Version<= 2.8.3

CVSS6.4Medium

CVECVE-2026-1909

View all WaveSurfer-WP vulnerabilities

Vulnerability Overview

The WaveSurfer-WP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's audio shortcode in all versions up to, and including, 2.8.3 due to insufficient input sanitization and output escaping on the 'src' attribute. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 2.8.4, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2026-1909 https://www.wordfence.com/threat-intel/vulnerabilities/id/b507462d-1ce2-4463-93bf-635ee78274f6

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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