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WordPress plugin

TC Custom JavaScript <= 1.2.1 — Unauthenticated Stored Cross-Site Scripting

CVE-2020-14063Published · Updated

Action summary

Affected: <1.2.2Update to 1.2.2 or newer

All remediation steps
Watch plugin
Severity
High8.3
CVSS
8.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:L Availability
Low
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

TC Custom JavaScript tc-custom-javascript

  1. Affected< 1.2.2
  2. Patched in1.2.2

Update to 1.2.2 or newer.

You are affected if you run < 1.2.2. Version 1.2.2 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under TC Custom JavaScript.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.2.2, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch TC Custom JavaScript to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Ram.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
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Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
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CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 8.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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