CVE-2021-39404: MaianAffiliate v1.0 allows an authenticated administrative user to save an XSS to the database.

Routine

MEDIUM 4.8DOWNGRADE

CVE-2021-39404 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.

MaianAffiliate v1.0 allows an authenticated administrative user to save an XSS to the database.

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 56%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-09-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: maianaffiliate

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

Am I affected?

Timeline

2021-09-22 13:15 UTCPublished CVE record published
2026-06-17 04:03 UTCUpdated Record last modified

maianaffiliate 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-2021-39404?

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

Is CVE-2021-39404 being exploited?

CVE-2021-39404 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-2021-39404 affect?

CVE-2021-39404 affects maianaffiliate. Severity is medium (CVSS 4.8). MaianAffiliate v1.0 allows an authenticated administrative user to save an XSS to the database.

How urgent is CVE-2021-39404?

Priority 33/100. 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-2021-39402 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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