CVE-2021-40926: Cross-site scripting (XSS) vulnerability in demos/demo.mysqli.php in getID3 1.X and v2.0.0-beta allows remote

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MEDIUM 6.1WATCHLISTUPGRADE

CVE-2021-40926 is a medium-severity flaw (CVSS 6.1) affecting getid3. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in demos/demo.mysqli.php in getID3 1.X and v2.0.0-beta allows remote attackers to inject arbitrary web script or HTML via the showtagfiles parameter.

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-10-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: getid3

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

Am I affected?

Timeline

2021-10-01 16:15 UTCPublished CVE record published
2026-06-17 04:07 UTCUpdated Record last modified

getid3 getid3 UPGRADE

Affected: >= 1.9.0 and < 2.0.0 · 2.0.0 beta

Fixed in: 2.0.0

Safe to downgrade to: a release before 1.9.0

1. Check installed version

apt-cache policy getid3 || rpm -q getid3 || getid3 --version

2. UPGRADE to 2.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade getid3

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade getid3

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.9.0 (Debian / Ubuntu)

apt-cache madison getid3 sudo apt install getid3=<VERSION_BEFORE_1.9.0> sudo apt-mark hold getid3

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list getid3 sudo dnf downgrade getid3-<VERSION_BEFORE_1.9.0> sudo dnf versionlock add getid3

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-2021-40926?

getid3: upgrade to 2.0.0. Exact commands for each OS are on this page.

Is CVE-2021-40926 being exploited?

CVE-2021-40926 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-2021-40926 affect?

CVE-2021-40926 affects getid3. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) vulnerability in demos/demo.mysqli.php in getID3 1.X and v2.0.0-beta allows remote attackers to inject arbitrary web script or HTML via the showtagfiles parameter.

How urgent is CVE-2021-40926?

Priority 47/100. Public exploit reference; On your watchlist

Software pages

PHP vulnerabilities

References

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