CVE-2026-88370CWE-122

CVE-2026-88370

Medium · published September 24, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
20.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00293 · 20.7th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-09-24T20:17Z
References (2)
https://github.com/madmurphy/libconfini/issues/20 · [email protected]https://github.com/madmurphy/libconfini/issues/20 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 26 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 24 SEP 00:00Z
    libconfini 1.16.4 contains a heap out-of-bounds write condition involving the bundled load_ini_buffer.h utility and strip_ini_cache()
    cvelistv5