CVE-2021-47912: PHP Melody version 3.0 contains multiple non-persistent cross-site scripting vulnerabilities in categories, im

Routine

MEDIUM 6.4DOWNGRADE

CVE-2021-47912 is a medium-severity flaw (CVSS 6.4) affecting php melody. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP Melody version 3.0 contains multiple non-persistent cross-site scripting vulnerabilities in categories, import, and user import files. Attackers can inject malicious scripts through unvalidated parameters to execute client-side attacks and potentially hijack user sessions.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-01
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: phpsugar

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

Am I affected?

Timeline

2026-02-01 13:15 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

phpsugar php melody DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy php-melody || rpm -q php-melody || php-melody --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison php-melody sudo apt install php-melody=<VERSION_BEFORE_3.0> sudo apt-mark hold php-melody

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

dnf --showduplicates list php-melody sudo dnf downgrade php-melody-<VERSION_BEFORE_3.0> sudo dnf versionlock add php-melody

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-2021-47912?

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

Is CVE-2021-47912 being exploited?

CVE-2021-47912 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-2021-47912 affect?

CVE-2021-47912 affects php melody. Severity is medium (CVSS 6.4). PHP Melody version 3.0 contains multiple non-persistent cross-site scripting vulnerabilities in categories, import, and user import files. Attackers can inject malicious scripts through unvalidated parameters to execute client-side attacks

How urgent is CVE-2021-47912?

Priority 32/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-47915 HIGH 8.1 DOWNGRADE PHP Melody version 3.0 contains a remote SQL injection vulnerability in the video edit module that allows auth
CVE-2021-47914 MEDIUM 6.4 DOWNGRADE PHP Melody version 3.0 contains a persistent cross-site scripting vulnerability in the edit-video.php submitte
CVE-2021-47913 MEDIUM 6.4 DOWNGRADE PHP Melody 3.0 contains a persistent cross-site scripting vulnerability in the video editor that allows privil

References

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