CVE-2026-78533: CWE-502 Deserialization of Untrusted Data in AncoraThemes Qwery
Description
CVE-2026-78533 is a critical vulnerability in AncoraThemes Qwery versions up to 3.6.1 that allows unauthenticated PHP object injection due to deserialization of untrusted data. This flaw can lead to full compromise of confidentiality, integrity, and availability of the affected system.
CVSS v3.1
Score 9.8critical
Affected software
AncoraThemes
Qwery
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-78533) involves unauthenticated PHP object injection in AncoraThemes Qwery versions up to 3.6.1. It is caused by unsafe deserialization of untrusted data (CWE-502), allowing an attacker to execute arbitrary code or manipulate application behavior without authentication. The CVSS 3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to complete system compromise including unauthorized code execution, data manipulation, and service disruption. The vulnerability affects confidentiality, integrity, and availability at a high level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to vulnerable endpoints and monitor for suspicious activity related to object injection attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-08-24T17:28:20.060Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aca96c32cdf04f6564a6057
Added to database: 10/10/2026, 19:49:23 UTC
Last enriched: 10/10/2026, 20:03:21 UTC
Last updated: 10/10/2026, 20:08:15 UTC
Views: 4
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