What is CVE-2021-39402?

CVE-2021-39402 is a high-severity vulnerability in Maianmedia Maianaffiliate, classified under Code Injection. CVSS score: 7.2/10. Published 2021-09-20.

How severe is CVE-2021-39402?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Maianmedia Maianaffiliate

CVE-2021-39402

MaianAffiliate v.1.0 is suffers from code injection by adding a new product via the admin panel. The injected payload is reflected on the affiliate main page for all authenticated and unauthenticated visitors.

Vulnerability class: RCE (Remote Code Execution)

Published 2021-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.2th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Maianmedia Maianaffiliate — versions 1.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

www.maianscriptworld.co.uk/ (Vendor Advisory)
github.com/mari0x00/MaianAffiliate-Code-execution-and-XSS (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-39402?: CVE-2021-39402 is a high-severity vulnerability in Maianmedia Maianaffiliate, classified under Code Injection. CVSS score: 7.2/10. Published 2021-09-20.
How severe is CVE-2021-39402?: High severity. CVSS v3 base score is 7.2 out of 10.