CVE-2026-78262: CWE-502 Deserialization of Untrusted Data in weDevs WP Project Manager
Description
CVE-2026-78262 is a critical vulnerability in WP Project Manager versions up to and including 4.0.6. It involves unauthenticated PHP object injection due to deserialization of untrusted data, classified under CWE-502. The vulnerability allows remote attackers to execute arbitrary code without any authentication.
CVSS v3.1
Score 9.8critical
Affected software
weDevs
WP Project Manager
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in WP Project Manager (<=4.0.6) is an unauthenticated PHP object injection caused by unsafe deserialization of untrusted data (CWE-502). It enables remote attackers to inject malicious PHP objects, potentially leading to full system compromise. The CVSS 3.1 score is 9.8, indicating 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 compromise of the affected system, including arbitrary code execution, data disclosure, and denial of service. Because the vulnerability is unauthenticated and remotely exploitable, it poses a severe risk to affected installations.
Mitigation Recommendations
No official patch or remediation level has been published yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling or restricting access to the WP Project Manager plugin to mitigate exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-08-24T07:37:35.411Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8cbd2aacd9273b492d3ddc
Added to database: 08/24/2026, 21:52:42 UTC
Last enriched: 09/10/2026, 08:22:32 UTC
Last updated: 10/08/2026, 18:48:48 UTC
Views: 73
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