CVE-2026-88370

3th percentile - higher than 3% of all known CVEs

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. This may be exploited to destabilize or crash a service that processes INI data.

Update libconfini to a version containing the fix, or modify the code to allocate one extra byte beyond ini_length before calling strip_ini_cache(). Until patched, consider validating and limiting the INI input processed.