CVE-2026-88344 Memory corruption in n/a
A crafted FlatBuffers schema can cause an out-of-bounds read in the lexer, leading to application crashes and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88344?
CVE-2026-88344 is a high-severity memory corruption vulnerability in n/a, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An out-of-bounds read vulnerability exists in the schema lexer of flatcc 4c3b999e. When an exact-length FlatBuffers schema buffer ends with a digit, the integer digit-scan loop in lex() advances past the end of the input buffer and dereferences the out-of-bounds pointer. A specially crafted schema can trigger a one-byte heap buffer over-read, resulting in application crash and denial of service.
Weakness: CWE-22
Which versions are affected by CVE-2026-88344?
How do I fix CVE-2026-88344?
No fix has been published for CVE-2026-88344 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-88344 being exploited?
There is no known exploitation of CVE-2026-88344 in the wild and no public exploit code.
Sources
Also known as GHSA-m2cr-9jfr-rmxm.