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WordPress plugin

Nelio AB Testing < 4.5.0 — Directory Traversal

CVE-2016-10977Published · Updated

Action summary

Affected: ≤4.4.4Update to 4.5.0 or newer

All remediation steps
Watch plugin
Severity
Medium6.5
CVSS
6.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:N Integrity
None
A:N Availability
None
Weakness
CWE-22 Path Traversal
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization nelio-ab-testing

  1. Affected≤ 4.4.4
  2. Patched in4.5.0

Update to 4.5.0 or newer.

You are affected if you run ≤ 4.4.4. Version 4.5.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 4.5.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Henri Salo (fgeek).

The Nelio AB Testing plugin for WordPress is vulnerable to Directory Traversal in versions up to, and including, 4.4.4 via the 'filename' parameter. This allows authenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization

All 8
More vulnerabilities in Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization
SeverityVulnerabilityCVEPublished
High7.2Authenticated (Editor+) Remote Code Execution
≤8.2.7Update to 8.2.8
CVE-2026-32573
Medium5.3Unauthenticated Information Exposure
≤8.2.8Update to 8.3.0
CVE-2026-40742
Medium4.9Authenticated (Editor+) SQL Injection
≤8.2.4Update to 8.2.5
CVE-2026-25378
High7.2Authenticated (Editor+) Remote Code Execution
≤8.1.8Update to 8.2.0
CVE-2025-67944
High8.8Cross-Site Request Forgery
<4.6.4Update to 4.6.4
CVE-2017-18547

Same weakness (Path Traversal)

All Path Traversal
Other Path Traversal 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 6.5

  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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