CVE-2021-39402: MaianAffiliate v.1.0 is suffers from code injection by adding a new product via the admin panel

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HIGH 7.2DOWNGRADE

CVE-2021-39402 is a high-severity flaw (CVSS 7.2) affecting maianaffiliate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-94
Published	2021-09-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: maianmedia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-20 15:15 UTCPublished CVE record published
2026-06-17 04:03 UTCUpdated Record last modified

maianmedia maianaffiliate DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy maianaffiliate || rpm -q maianaffiliate || maianaffiliate --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison maianaffiliate sudo apt install maianaffiliate=<VERSION_BEFORE_1.0> sudo apt-mark hold maianaffiliate

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list maianaffiliate sudo dnf downgrade maianaffiliate-<VERSION_BEFORE_1.0> sudo dnf versionlock add maianaffiliate

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-39402?

maianaffiliate: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-39402 being exploited?

CVE-2021-39402 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-39402 affect?

CVE-2021-39402 affects maianaffiliate. Severity is high (CVSS 7.2). 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.

How urgent is CVE-2021-39402?

Priority 48/100. High severity; Public exploit reference

Related CVEs

CVE-2021-41421 MEDIUM 4.8 DOWNGRADE A PHP code injection vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker to gain RCE throug
CVE-2021-41420 MEDIUM 5.4 DOWNGRADE A stored XSS vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker for arbitrary JavaScript c
CVE-2021-39404 MEDIUM 4.8 DOWNGRADE MaianAffiliate v1.0 allows an authenticated administrative user to save an XSS to the database.

References

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