CVE-2025-48101

WordPress Constant Contact for WordPress Plugin <= 4.1.1 - PHP Object Injection Vulnerability

Published Sep 9, 2025 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Description

Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress allows Object Injection. This issue affects Constant Contact for WordPress: from n/a through 4.1.1.

Analysis

Technical impact

Deserialization of untrusted data in the Constant Contact for WordPress plugin allows attackers to perform object injection, which could enable execution of arbitrary PHP code, compromising the confidentiality, integrity, or availability of the host system. This vulnerability has a CVSS score of 8.8, indicating high severity.

Affected Systems

The weakness affects the Constant Contact for WordPress plugin by webdevstudios, versions up to and including 4.1.1. No patched version exists; the plugin has been permanently closed and is no longer available for download.

Risk and Exploitability

The EPSS score is less than 1%, suggesting low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog. Attackers could potentially trigger the deserialization path through normal plugin functionality or specially crafted web requests; the exact entry point is not specified, but it is inferred that the plugin processes user-supplied data without adequate validation.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

webdevstudios

Constant Contact for WordPress

unaffected

Version	Status	Constraints
`n/a`	affected	≤ 4.1.1

No data.

Vendor	Product	Versions
Webdevstudios	Constant Contact For Wordpress	—
Wordpress	Wordpress	—

Remediation

Vendor Solution

No patched version is available. This plugin has been closed as of August 26, 2025 and is not available for download. This closure is permanent. Reason: Author Request.

OpenCVE Recommended Actions

Uninstall the Constant Contact for WordPress plugin from the site.
Remove any residual files or database entries associated with the plugin.
Replace the plugin with a vetted alternative that properly validates deserialized data, or disable contact form functionality until a secure solution is available.

Generated by OpenCVE AI on April 30, 2026 at 06:58 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-27457	Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress allows Object Injection. This issue affects Constant Contact for WordPress: from n/a through 4.1.1.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.327% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://patchstack.com/database/wordpress/plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve

History

Apr 28, 2026 7:45 PM References updated View changes

Type	Values Removed	Values Added
References	https://patchstack.com/database/Wordpress/Plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve

Apr 28, 2026 6:30 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description	Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress constant-contact-api allows Object Injection.This issue affects Constant Contact for WordPress: from n/a through <= 4.1.1.	Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress allows Object Injection. This issue affects Constant Contact for WordPress: from n/a through 4.1.1.
References		https://patchstack.com/database/wordpress/plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve

Apr 23, 2026 3:45 PM References updated View changes

Type	Values Removed	Values Added
References	https://patchstack.com/database/wordpress/plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve

Apr 23, 2026 3:00 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description	Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress allows Object Injection. This issue affects Constant Contact for WordPress: from n/a through 4.1.1.	Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress constant-contact-api allows Object Injection.This issue affects Constant Contact for WordPress: from n/a through <= 4.1.1.
References		https://patchstack.com/database/Wordpress/Plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve

Sep 9, 2025 11:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 9, 2025 9:45 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Webdevstudios Webdevstudios constant Contact For Wordpress Wordpress Wordpress wordpress
Vendors & Products		Webdevstudios Webdevstudios constant Contact For Wordpress Wordpress Wordpress wordpress

Sep 9, 2025 4:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Deserialization of Untrusted Data vulnerability in webdevstudios Constant Contact for WordPress allows Object Injection. This issue affects Constant Contact for WordPress: from n/a through 4.1.1.
Title		WordPress Constant Contact for WordPress Plugin <= 4.1.1 - PHP Object Injection Vulnerability
Weaknesses		CWE-502
References		https://patchstack.com/database/wordpress/plugin/constant-contact-api/vulnerability/wordpress-constant-contact-for-wordpress-plugin-4-1-1-php-object-injection-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}`