CVE-2026-78292: CWE-502 Deserialization of Untrusted Data in hashthemes Hash Form
Description
CVE-2026-78292 is a critical unauthenticated PHP Object Injection vulnerability affecting Hash Form versions up to and including 1.4.1. It involves deserialization of untrusted data, classified under CWE-502. The vulnerability allows remote attackers to execute arbitrary code without authentication.
CVSS v3.1
Score 9.8critical
Affected software
hashthemes
Hash Form
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Hash Form (<= 1.4.1) arises from unsafe deserialization of untrusted data, enabling unauthenticated PHP Object Injection. The CVSS 3.1 score of 9.8 reflects its critical impact with network attack vector, no required privileges or user interaction, and high confidentiality, integrity, and availability impacts. No official patch or remediation guidance is currently provided by the vendor or advisory sources.
Potential Impact
Successful exploitation can lead to full system compromise, including arbitrary code execution, data disclosure, and service disruption. The vulnerability is remotely exploitable without authentication, making it highly severe.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid exposing vulnerable versions to untrusted networks and consider applying temporary mitigations such as disabling vulnerable functionality if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-08-24T07:38:18.805Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9001f6acd9273b49109364
Added to database: 08/27/2026, 09:23:02 UTC
Last enriched: 09/09/2026, 12:07:26 UTC
Last updated: 10/10/2026, 18:48:22 UTC
Views: 83
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