Vulnerability 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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/dvidelabs/flatcc
- https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/json_parser.c#L539-L
- https://github.com/dvidelabs/flatcc/commit/356792dc155a9e685acdfe0ec1e209bdadcb4
- https://hackmd.io/@haindpwn/flatcc-json-number-oob-read
- https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via
FAQ
What is CVE-2026-116733?
CVE-2026-116733 is a vulnerability with a CVSS score of 3.7 (LOW). 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 ca...
How severe is CVE-2026-116733?
CVE-2026-116733 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116733?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.