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CVE-2026-90786— Dvidelabs flatcc Duplicate Symbol semantics.c align_order_members assertion

Quick assessment

Affected
Dvidelabs flatcc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Dvidelabs 的 flatcc（版本 0.6.3 及更早版本）中确认存在一个漏洞。该漏洞影响了 文件中 函数，位于“重复符号处理器”组件中。该操作会导致可触发的断言失败（reachable assertion）。攻击者可以从远程发起攻击。该漏洞已被公开披露，可能被利用以执行攻击。补丁标识：8b19ba4e992ebcad7f5970704d1afc5507fa5205。为修复此问题，建议部署相应补丁。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-90786

Vulnerability Information
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Vulnerability Title
Dvidelabs flatcc Duplicate Symbol semantics.c align_order_members assertion
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Dvidelabs flatcc 0.6.0 cpe:2.3:a:dvidelabs:flatcc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90786

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III. Intelligence Information for CVE-2026-90786

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Patches & Fixes for CVE-2026-90786 (1)

Proof of Concept for CVE-2026-90786 (1)

Same Patch Batch · Dvidelabs · 2026-09-14 · 3 CVEs total

CVE-2026-90784 5.3 MEDIUM Dvidelabs flatcc semantics.c fb_clear_parser memory leak
CVE-2026-90785 5.3 MEDIUM Dvidelabs flatcc Struct Analysis semantics.c analyze_struct assertion

IV. Related Vulnerabilities

Same product: flatcc
Same vendor: Dvidelabs
Same weakness: CWE-617

V. Comments for CVE-2026-90786

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