CVE-2021-41421: A PHP code injection vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker to gain RCE throug

Routine

MEDIUM 4.8DOWNGRADE

CVE-2021-41421 is a medium-severity flaw (CVSS 4.8) affecting maianaffiliate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A PHP code injection vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker to gain RCE through the MaianAffiliate admin panel.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79, CWE-434
Published	2022-06-16
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

2022-06-16 17:15 UTCPublished CVE record published
2026-06-17 04:08 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-2021-41421?

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

Is CVE-2021-41421 being exploited?

CVE-2021-41421 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-2021-41421 affect?

CVE-2021-41421 affects maianaffiliate. Severity is medium (CVSS 4.8). A PHP code injection vulnerability in MaianAffiliate v.1.0 allows an authenticated attacker to gain RCE through the MaianAffiliate admin panel.

How urgent is CVE-2021-41421?

Priority 33/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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.
CVE-2021-39402 HIGH 7.2 DOWNGRADE MaianAffiliate v.1.0 is suffers from code injection by adding a new product via the admin panel

References

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