What’s Vulnerable › Vulnerabilities

CVE-2024-2693: Link Whisper Free <= 0.7.1 - Authenticated (Contributor+) PHP Object Injection

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-09 · updated 2026-06-17
• Weakness: CWE-502

Description

The Link Whisper Free plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 0.7.1 via deserialization of untrusted input of the 'mfn-page-items' post meta value. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Affected products

• Link Whisper Free: before 0.7.1 — fixed in 0.7.1

How to fix

Upgrade to a fixed version: Link Whisper Free 0.7.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3057518/link-whisper/tags/0.7.2/core/Wpil/Editor/Muffin.php?old=3048109&old_path=link-whisper%2Ftags%2F0.7.1%2Fcore%2FWpil%2FEditor%2FMuffin.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/7d5dd7cd-f96a-48df-a553-be5e59d8290f?source=cve
• https://plugins.trac.wordpress.org/changeset/3057518/link-whisper/tags/0.7.2/core/Wpil/Editor/Muffin.php?old=3048109&old_path=link-whisper%2Ftags%2F0.7.1%2Fcore%2FWpil%2FEditor%2FMuffin.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/7d5dd7cd-f96a-48df-a553-be5e59d8290f?source=cve

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