# CVE-2026-90786

## Summary

- **CVE ID:** CVE-2026-90786
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-617
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 15, 2026

## Description

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.

## Affected Products

- Dvidelabs — flatcc (0.6.0)
- Dvidelabs — flatcc (0.6.1)
- Dvidelabs — flatcc (0.6.2)
- Dvidelabs — flatcc (0.6.3)

## References

- [CNA](https://vuldb.com/vuln/403292)
- [CNA](https://vuldb.com/vuln/403292/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90786)
- [CNA](https://vuldb.com/submit/919201)
- [CNA](https://github.com/dvidelabs/flatcc/issues/387)
- [CNA](https://github.com/jimjag/flatcc/commit/8b19ba4e992ebcad7f5970704d1afc5507fa5205)
- [CNA](https://github.com/dvidelabs/flatcc/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._