---
id: CVE-2026-90786
title: A vulnerability was determined in Dvidelabs flatcc up to 0.6.3
summary: >-
  A vulnerability was determined in Dvidelabs flatcc up to 0.6.3. This impacts
  the function align_order_members of the file src/compiler/semantics.c of the
  component Duplicate Symbol Handler. This manipulation causes reachable
  assertion. T…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-617
vendor: Dvidelabs
product: flatcc
affected:
  - flatcc 0.6.0
  - flatcc 0.6.1
  - flatcc 0.6.2
  - flatcc 0.6.3
published: '2026-09-14'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T16:17:41.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90786'
references:
  - url: 'https://github.com/dvidelabs/flatcc/'
    label: cna@vuldb.com
  - url: 'https://github.com/dvidelabs/flatcc/issues/387'
    label: cna@vuldb.com
  - url: >-
      https://github.com/jimjag/flatcc/commit/8b19ba4e992ebcad7f5970704d1afc5507fa5205
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90786'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/919201'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403292'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403292/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-15T15:43:42.783546Z'
epss: 0.00427
epssPercentile: 0.36612
ingestedAt: '2026-09-14T15:23:07.422Z'
---

## Overview

A vulnerability was determined in Dvidelabs flatcc up to 0.6.3. This impacts the function align_order_members of the file src/compiler/semantics.c of the component Duplicate Symbol Handler. This manipulation causes reachable assertion. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 8b19ba4e992ebcad7f5970704d1afc5507fa5205. To fix this issue, it is recommended to deploy a patch.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.