CVE-2026-88370 Memory corruption in n/a
A heap out-of-bounds write in libconfini allows attackers to cause denial of service by processing non-empty INI input.
- 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-2026-88370?
CVE-2026-88370 is a medium-severity memory corruption vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libconfini 1.16.4 contains a heap out-of-bounds write condition involving the bundled load_ini_buffer.h utility and strip_ini_cache(). The bundled utility allocates exactly ini_length bytes, while strip_ini_cache() unconditionally writes a NUL terminator at ini_source[ini_length], requiring an additional writable byte. Applications using the bundled allocation pattern can trigger deterministic heap memory corruption when processing any non-empty INI input, resulting in denial of service.
Weakness: CWE-122
Which versions are affected by CVE-2026-88370?
How do I fix CVE-2026-88370?
No fix has been published for CVE-2026-88370 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-2026-88370 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88370 exists.
Sources
Also known as GHSA-hqrg-m4c7-p48x.