CVE-2021-24472: Onair2 < 3.9.9.2 & KenthaRadio < 2.0.2 - Unauthenticated RFI and SSRF

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 56.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-08-02 · updated 2026-06-17
Weakness: CWE-918

Description

The OnAir2 WordPress theme before 3.9.9.2 and QT KenthaRadio WordPress plugin before 2.0.2 have exposed proxy functionality to unauthenticated users, sending requests to this proxy functionality will have the web server fetch and display the content from any URI, this would allow for SSRF (Server Side Request Forgery) and RFI (Remote File Inclusion) vulnerabilities on the website.

Affected products

QantumThemes KenthaRadio: before 2.0.2 — fixed in 2.0.2
QantumThemes OnAir2: before 3.9.9.2 — fixed in 3.9.9.2

How to fix

Upgrade to a fixed version: QantumThemes KenthaRadio 2.0.2; QantumThemes OnAir2 3.9.9.2. Check the vendor advisory for mitigations.

References

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