Vulnerability Description
An out-of-bounds read vulnerability exists in the schema lexer of flatcc 4c3b999e. When an exact-length FlatBuffers schema ends with an unterminated quotation mark, the C-string scanning logic in lex() dereferences the input pointer after it has reached the end of the buffer. A specially crafted schema can trigger a one-byte heap buffer over-read, resulting in application crash and denial of service.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/dvidelabs/flatcc/issues/385
- https://github.com/jimjag/flatcc/commit/8581715e8ec4e5de8eea9fd6dad949e4dd7d0fa0
- https://github.com/dvidelabs/flatcc/issues/385
FAQ
What is CVE-2026-88345?
CVE-2026-88345 is a vulnerability with a CVSS score of 7.5 (HIGH). An out-of-bounds read vulnerability exists in the schema lexer of flatcc 4c3b999e. When an exact-length FlatBuffers schema ends with an unterminated quotation mark, the C-string scanning logic in lex(...
How severe is CVE-2026-88345?
CVE-2026-88345 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-88345?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.