{"id":"CVE-2026-88370","title":"libconfini 1.16.4 contains a heap out-of-bounds write condition involving the bundled load_ini_buffer.h utility and strip_ini_cache()","summary":"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…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-122"],"published":"2026-09-24","updated":"2026-09-25","sourceUpdated":"2026-09-25T16:17:29.020","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88370","references":[{"url":"https://github.com/madmurphy/libconfini/issues/20","label":"cve@mitre.org"},{"url":"https://github.com/madmurphy/libconfini/issues/20","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00352,"epssPercentile":0.28705,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-25T15:31:19.915848Z"},"ingestedAt":"2026-09-24T16:47:15.826Z","slug":"CVE-2026-88370","body":"## Overview\n\nlibconfini 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":211047,"id":"CVE-2026-88370","ts":1790352785139,"field":"exploit_available","old":"false","new":"true"},{"seq":211046,"id":"CVE-2026-88370","ts":1790352785139,"field":"cvss","old":null,"new":"5.3"},{"seq":211045,"id":"CVE-2026-88370","ts":1790352785139,"field":"severity","old":"none","new":"medium"}]}