CVE-2026-81784
Deferred Deferred - Pending Action

Unauthenticated PHP Object Injection in Wise Chat

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: Patchstack

Description
Unauthenticated PHP Object Injection in Wise Chat <= 3.4 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-10
AI Q&A
2026-09-10
EPSS Evaluated
N/A
NVD
CVE-2026-81784
EUVD
EUVD-2026-75517

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wise_chat wise_chat to 3.4 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is an unauthenticated PHP Object Injection vulnerability in the Wise Chat WordPress plugin versions 3.4 or lower. It allows remote attackers to inject malicious PHP objects without authentication, potentially leading to severe attacks like code execution, SQL injection, or denial of service if a suitable POP chain exists.

Detection Guidance

Detecting this vulnerability requires checking if the Wise Chat plugin version 3.4 or lower is installed on your WordPress site. You can use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files in the /wp-content/plugins/wise-chat/ directory for version details.

Impact Analysis

This vulnerability can lead to unauthorized code execution, data theft, database manipulation, or service disruption. Since it is unauthenticated and remotely exploitable, attackers could target your site without needing access credentials, potentially causing widespread damage or data breaches.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR and HIPAA compliance requirements. Unauthorized access to sensitive data could result in legal penalties, fines, and reputational damage due to non-compliance with data protection regulations.

Mitigation Strategies

Immediately apply the mitigation rule provided by Patchstack to block attacks. If possible, update the plugin to a patched version. Otherwise, consider disabling the plugin temporarily until an official fix is released. Seek assistance from your hosting provider or a developer if needed.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-81784. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart