CVE-2025-49400

CRITICAL 9.8

WordPress PressApps Knowledge Base Contextual Sidebar Addon Plugin <= 4.2.1 - PHP Object Injection Vulnerability

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

Deserialization of Untrusted Data vulnerability in osama.esh PressApps Knowledge Base Contextual Sidebar Addon pressapps-knowledge-base allows Object Injection.This issue affects PressApps Knowledge Base Contextual Sidebar Addon: from n/a through <= 4.2.1.

CWE	CWE-502
Vendor	osama.esh
Product	pressapps knowledge base contextual sidebar addon
Published	Aug 20, 2025
Last Updated	Apr 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

osama.esh / PressApps Knowledge Base Contextual Sidebar Addon

0 ≤ 4.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/pressapps-knowledge-base/vulnerability/wordpress-pressapps-knowledge-base-contextual-sidebar-addon-plugin-4-2-1-php-object-injection-vulnerability?_s_id=cve

Credits

João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program