CVE-2026-90786

Dvidelabs flatcc Duplicate Symbol semantics.c align_order_members assertion

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

Dvidelabs · flatcc

CVSS v4.0 VULDB

5.5 MEDIUMCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULDB

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v2.0 VULDB

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.72% chance of exploitation in the next 30 days, 53rd percentile

Published

2026-09-14

Updated

2026-09-15

Proof-of-concept exploits (1)

• dvidelabs/flatcc/issues/387770★ · 2026-10-06

References

• CVE Record
• NVD entry

Related

• CVE-2021-33983
• CVE-2026-90784
• CVE-2026-90785