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WordPress plugin

External Links <= 2.55 — Authenticated (Administrator+) Cross-Site Scripting

1254e0ad-852e-4fd4-8317-61bfbbc9f737Published · Updated

Action summary

Affected: ≤2.55Update to 2.56 or newer

All remediation steps
Watch plugin
Severity
Medium5.5
CVSS
5.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:H Privileges required
High
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

External Links – nofollow, noopener & new window wp-external-links

  1. Affected≤ 2.55
  2. Patched in2.56

Update to 2.56 or newer.

You are affected if you run ≤ 2.55. Version 2.56 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under External Links – nofollow, noopener & new window.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 2.56, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch External Links – nofollow, noopener & new window to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence.

The External Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.55 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in External Links – nofollow, noopener & new window

All 3
More vulnerabilities in External Links – nofollow, noopener & new window
SeverityVulnerabilityCVEPublished
Medium4.3Cross-Site Request Forgery via action_admin_action_wpel_dismiss_notice
≤2.57Update to 2.58
—
Medium6.4Authenticated Stored Cross-Site Scripting
<1.81Update to 1.81
—

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 5.5

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
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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