Low 3.7Published Oct 26, 2026

CVE-2026-116733flatcc through 0.6.4 Out-of-Bounds Read via __flatcc_json_parser_number

Updated under an hour ago (Oct 28, 2026, 5:25 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for dvidelabs flatcc

Exploited in the last 30 days

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: 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 26, 2026
First seen by InfoSec Signals: Oct 26, 2026

Affected products

Affected products

dvidelabs flatcc dvidelabs:flatcc (from the name)	through 0.6.4	CNA record

References

References

https://github.com/dvidelabs/flatcc/commit/356792dc155a9e685acdfe0ec1e209bdadcb4ab9	patch
https://github.com/dvidelabs/flatcc	product
https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/json_parser.c#L539-L543	technical-description
https://hackmd.io/@haindpwn/flatcc-json-number-oob-read	third-party-advisory
https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-flatcc-json-parser-number	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.