InfiniteWP Client <= 1.3.7 — PHP Object Injection
a71a1a7b-6299-44c5-b686-65f214986c27Published · Updated Action summary
Affected: ≤1.3.7Update to 1.3.8 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-502 PHP Object Injection
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
InfiniteWP Client iwp-client
- Affected≤ 1.3.7
- Patched in1.3.8
Update to 1.3.8 or newer.
You are affected if you run ≤ 1.3.7. Version 1.3.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under InfiniteWP Client.
- 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
- Update to version 1.3.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch InfiniteWP Client to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Marc-Alexandre Montpas.
The InfiniteWP Client plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.3.7 via deserialization of untrusted input. This allows unauthenticated attackers to inject a PHP Object which can result in subsequent attacks Remote Code Injection, SQL Injection, Path Traversal, etc when a usable gadget is present.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in InfiniteWP Client
All 10| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.5 | Authenticated (Admin+) SQL Injection via 'iwp_get_comments_*' Array Key ≤1.13.9Update to 1.13.10 | CVE-2026-17576 | |
| Medium4.9 | Authenticated (Administrator+) SQL Injection ≤1.13.9Update to 1.13.10 | CVE-2026-74011 | |
| High8.1 | Unauthenticated Administrator Account Takeover on Multi-Site ≤1.13.5Update to 1.13.6 | CVE-2026-15038 | |
| Medium5.3 | Unauthenticated Limited Directory Traversal to Arbitrary .txt File Reading ≤1.13.0Update to 1.13.1 | CVE-2024-10585 | |
| Medium5.9 | Unauthenticated Sensitive Information Exposure ≤1.12.3Update to 1.12.3.1 | CVE-2023-6565 |
- Medium6.5Authenticated (Admin+) SQL Injection via 'iwp_get_comments_*' Array Key
≤1.13.9Update to 1.13.10
- Medium4.9Authenticated (Administrator+) SQL Injection
≤1.13.9Update to 1.13.10
- High8.1Unauthenticated Administrator Account Takeover on Multi-Site
≤1.13.5Update to 1.13.6
- Medium5.3Unauthenticated Limited Directory Traversal to Arbitrary .txt File Reading
≤1.13.0Update to 1.13.1
- Medium5.9Unauthenticated Sensitive Information Exposure
≤1.12.3Update to 1.12.3.1
Same weakness (PHP Object Injection)
All PHP Object Injection| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- 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
- 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
- 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
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. 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.