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Broken Link Checker <= 1.11.16 — Authenticated (Admin+) PHAR Deserialization

CVE-2022-2438Published · Updated

Action summary

Affected: ≤1.11.16Update to 1.11.17 or newer

All remediation steps
Watch plugin
Severity
High7.2
CVSS
7.2
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-502 PHP Object Injection
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Broken Link Checker broken-link-checker

  1. Affected≤ 1.11.16
  2. Patched in1.11.17

Update to 1.11.17 or newer.

You are affected if you run ≤ 1.11.16. Version 1.11.17 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Broken Link Checker.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 1.11.17, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Broken Link Checker to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Rasoul Jahanshahi.

The Broken Link Checker plugin for WordPress is vulnerable to deserialization of untrusted input via the '$log_file' value in versions up to, and including 1.11.16. This makes it possible for authenticated attackers with administrative privileges and above to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Broken Link Checker

All 17
More vulnerabilities in Broken Link Checker
SeverityVulnerabilityCVEPublished
Medium6.5Unauthenticated Arbitrary Shortcode Execution via parser_callback
≤2.4.14.1Update to 2.4.15
CVE-2026-96562
Medium5.3Unauthenticated Arbitrary HTML Attribute Injection
≤2.4.14.1Update to 2.4.15
CVE-2026-102389
Medium5.5Authenticated (Editor+) Server-Side Request Forgery
≤2.4.14Update to 2.4.14.1
CVE-2026-84772
High7.2Unauthenticated Stored Cross-Site Scripting via Comment Author URL / Link Log
≤2.4.13Update to 2.4.13.1
CVE-2026-75528
Critical9.8Unauthenticated Remote Code Execution
<2.4.12Update to 2.4.12
CVE-2026-18937

Same weakness (PHP Object Injection)

All PHP Object Injection
Other PHP Object Injection 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 high, CVSS 7.2

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. 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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