Struct Analysis Vulnerability in Dvidelabs Flatcc Software
CVE-2026-90785

6.9MEDIUM

Key Information:

Vendor

Dvidelabs

Status
Flatcc
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90785?

A vulnerability exists in the analyze_struct function located in src/compiler/semantics.c of the Dvidelabs Flatcc software, affecting versions up to 0.6.3. This issue leads to a reachable assertion that can be exploited remotely. An attack leveraging this vulnerability has been made public, emphasizing the need for immediate mitigation steps. A patch (identified as f705032346ee39efd7d3848c50b73d455d28d06d) has been released to address this concern, and it is crucial for users to update their systems to safeguard against potential exploit attempts.

Affected Version(s)

flatcc 0.6.0

flatcc 0.6.1

flatcc 0.6.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90785 - Proof of Concept

References

https://vuldb.com/vuln/403291
vdb-entrytechnical-description
https://vuldb.com/vuln/403291/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90785
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

lrrh (VulDB User)
.