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Gwolle Guestbook <= 1.5.3 — Remote File Inclusion

CVE-2015-8351Published · Updated

Action summary

Affected: <1.5.4Update to 1.5.4 or newer

All remediation steps
Watch plugin
Severity
Critical9.0
CVSS
9.0
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-98 Local File Inclusion
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Gwolle Guestbook gwolle-gb

  1. Affected< 1.5.4
  2. Patched in1.5.4

Update to 1.5.4 or newer.

You are affected if you run < 1.5.4. Version 1.5.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Gwolle Guestbook.
  • 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 1.5.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Gwolle Guestbook to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to High-Tech Bridge Security Research Lab.

PHP remote file inclusion vulnerability in the Gwolle Guestbook plugin before 1.5.4 for WordPress, when allow_url_include is enabled, allows remote authenticated users to execute arbitrary PHP code via a URL in the abspath parameter to frontend/captcha/ajaxresponse.php. NOTE: this can also be leveraged to include and execute arbitrary local files via directory traversal sequences regardless of whether allow_url_include is enabled.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Gwolle Guestbook

All 8
More vulnerabilities in Gwolle Guestbook
SeverityVulnerabilityCVEPublished
Medium6.1Reflected Cross-Site Scripting via 'permalink' Parameter
≤5.1.1Update to 5.1.2
CVE-2026-103481
Medium6.1Unauthenticated Stored Cross-Site Scripting via `gwolle_gb_content` Parameter
≤4.9.2Update to 4.9.3
CVE-2025-5807
Medium6.1Reflected Cross-Site Scripting
≤4.7.1Update to 4.7.2
CVE-2025-24710
Medium6.1Reflected Cross-Site Scripting
≤4.1.2Update to 4.2
CVE-2021-24980
Medium6.1Cross-Site Scripting
≤2.5.3Update to 2.5.4
CVE-2018-17884

Same weakness (Local File Inclusion)

All Local File Inclusion
Other Local File Inclusion 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 critical, CVSS 9.0

  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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