Remote Assertion Vulnerability in Dvidelabs Flatcc Up to 0.6.3
CVE-2026-90786

6.9MEDIUM

Key Information:

Vendor

Dvidelabs

Status
Flatcc
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90786?

A remote assertion vulnerability exists in Dvidelabs Flatcc up to version 0.6.3, specifically in the 'align_order_members' function located in the 'src/compiler/semantics.c' file of the Duplicate Symbol Handler component. This flaw allows an attacker to manipulate the reachable assertions, potentially leading to unexpected behaviors. Given that the exploit is publicly disclosed, it poses a significant risk if not addressed. Users are strongly advised to apply the patch identified as '8b19ba4e992ebcad7f5970704d1afc5507fa5205' to mitigate this issue.

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-2026-90786 - Proof of Concept

References

https://vuldb.com/vuln/403292
vdb-entrytechnical-description
https://vuldb.com/vuln/403292/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90786
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)
.