CVE-2019-18841: Chartkick.js 3.1.0 through 3.1.3, as used in the Chartkick gem before 3.3.0 for Ruby, allows prototype polluti

This month

HIGH 7.3REMOTEUPGRADE

CVE-2019-18841 is a high-severity flaw (CVSS 7.3) affecting chartkick.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Chartkick.js 3.1.0 through 3.1.3, as used in the Chartkick gem before 3.3.0 for Ruby, allows prototype pollution.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2019-11-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: chartkick

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

Am I affected?

Timeline

2019-11-11 01:15 UTCPublished CVE record published
2026-06-17 02:25 UTCUpdated Record last modified

chartkick chartkick.js UPGRADE

Affected: >= 3.1.0 and <= 3.1.3

Fixed in: newer than 3.1.3

Safe to downgrade to: a release before 3.1.0

1. Check installed version

apt-cache policy chartkick.js || rpm -q chartkick.js || chartkick.js --version

2. UPGRADE to newer than 3.1.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chartkick.js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chartkick.js

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 3.1.0 (Debian / Ubuntu)

apt-cache madison chartkick.js sudo apt install chartkick.js=<VERSION_BEFORE_3.1.0> sudo apt-mark hold chartkick.js

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

dnf --showduplicates list chartkick.js sudo dnf downgrade chartkick.js-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add chartkick.js

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-2019-18841?

chartkick.js: upgrade to newer than 3.1.3. Exact commands for each OS are on this page.

Is CVE-2019-18841 being exploited?

CVE-2019-18841 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-2019-18841 affect?

CVE-2019-18841 affects chartkick.js. Severity is high (CVSS 7.3). Chartkick.js 3.1.0 through 3.1.3, as used in the Chartkick gem before 3.3.0 for Ruby, allows prototype pollution.

How urgent is CVE-2019-18841?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Software pages

Ruby vulnerabilities

References

← Back to latest CVEs