Low severity3.7NVD Advisory· Published Oct 26, 2026· Updated Oct 26, 2026

CVE-2026-116733

Description

flatcc through 0.6.4 contains an out-of-bounds read vulnerability in __flatcc_json_parser_number that allows attackers to read past the input buffer via numbers ending in a decimal point. Attackers can supply untrusted JSON ending immediately after a decimal point to generated parsers, crashing applications when the buffer ends at an unmapped page.

Affected products

Dvidelabs/Flatccllm-fuzzy
Range: <=0.6.4

Patches

Vulnerability mechanics

References

github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/json_parser.cnvd
github.com/dvidelabs/flatcc/commit/356792dc155a9e685acdfe0ec1e209bdadcb4ab9nvd
hackmd.io/@haindpwn/flatcc-json-number-oob-readnvd
www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-flatcc-json-parser-numbernvd

News mentions

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cvss	0.240
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000