CVE-2026-82803 PUBLISHED

A vulnerability has been found in armink struct2json 1.0. This affects the function S2J_STRUCT_GET_string_ELEMENT in the library struct2json/inc/s2jdef.h of the component JSON Deserialization. The manipulation of the argument valuestring leads to null pointer dereference. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

• fa1c4 (VulDB User) reporter
• VulDB CNA Team coordinator

• VDB-397224 | armink struct2json JSON Deserialization s2jdef.h S2J_STRUCT_GET_string_ELEMENT null pointer dereference
• VDB-397224 | CTI Indicators (IOB, IOC, IOA)
• CVE-2026-82803 | CVE Analysis and Report
• Submit #858192 | armink struct2json 4f1fdc9fe928b94cb2e1f23f37d18b4cd2e35bfa NULL Pointer Dereference
• https://github.com/fa1c4/security-advisories/tree/main/struct2json
• https://github.com/fa1c4/security-advisories/tree/main/struct2json/PoC

• NULL Pointer Dereference CWE
• Denial of Service CWE