CVE-2020-14063: A stored Cross-Site Scripting (XSS) vulnerability in the TC Custom JavaScript plugin before 1.2.2 for WordPres

Q: How do I fix CVE-2020-14063?

tc custom javascript: upgrade to 1.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2020-14063 being exploited?

CVE-2020-14063 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-14063 affect?

CVE-2020-14063 affects tc custom javascript. Severity is medium (CVSS 6.1). A stored Cross-Site Scripting (XSS) vulnerability in the TC Custom JavaScript plugin before 1.2.2 for WordPress allows unauthenticated remote attackers to inject arbitrary JavaScript via the tccj-content parameter. This is displayed in the

Q: How urgent is CVE-2020-14063?

Priority 44/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2020-14063 is a medium-severity flaw (CVSS 6.1) affecting tc custom javascript. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stored Cross-Site Scripting (XSS) vulnerability in the TC Custom JavaScript plugin before 1.2.2 for WordPress allows unauthenticated remote attackers to inject arbitrary JavaScript via the tccj-content parameter. This is displayed in the page footer of every front-end page and executed in the browser of visitors.

Why this priority

Public exploit reference

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	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-07-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tc custom javascript project

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

Am I affected?

Timeline

2020-07-21 18:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

tc custom javascript project tc custom javascript UPGRADE

Affected: < 1.2.2

Fixed in: 1.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tc-custom-javascript || rpm -q tc-custom-javascript || tc-custom-javascript --version

2. UPGRADE to 1.2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tc-custom-javascript

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tc-custom-javascript

Note

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

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-2020-14063?

tc custom javascript: upgrade to 1.2.2. Exact commands for each OS are on this page.

Is CVE-2020-14063 being exploited?

CVE-2020-14063 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-2020-14063 affect?

CVE-2020-14063 affects tc custom javascript. Severity is medium (CVSS 6.1). A stored Cross-Site Scripting (XSS) vulnerability in the TC Custom JavaScript plugin before 1.2.2 for WordPress allows unauthenticated remote attackers to inject arbitrary JavaScript via the tccj-content parameter. This is displayed in the

How urgent is CVE-2020-14063?

Priority 44/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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