{"id":"CVE-2026-110678","title":"Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse","summary":"Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse.\n\nThe parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"adp","cwe":["CWE-770"],"product":"Cpanel-JSON-XS","affected":["Cpanel-JSON-XS < 4.80"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-29T16:44:46.401468Z"},"published":"2026-10-19","updated":"2026-10-29","sourceUpdated":"2026-10-29T16:44:49.590Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110678","references":[{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/d516f296b1714e06b0fb9eaae72f4558ae3d83d6.patch"},{"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"}],"tags":["cve.org"],"epss":0.00486,"epssPercentile":0.41825,"ingestedAt":"2026-10-19T18:35:50.144Z","slug":"CVE-2026-110678","body":"## Overview\n\nCpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse.\n\nThe parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far it has progressed, not with the buffer length. A chunk that starts with a NUL byte stops the parser before it progresses, and a call in void context skips the check, so the buffer grows without limit.\n\nA peer streaming data to an incr_parse consumer can exhaust process memory regardless of max_size.\n\n## Affected\n\n- `Cpanel-JSON-XS < 4.80`\n\n## Remediation\n\nUpgrade to Cpanel-JSON-XS 4.80 or later.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":231906,"id":"CVE-2026-110678","ts":1793566931132,"field":"cvss","old":null,"new":"7.5"},{"seq":231905,"id":"CVE-2026-110678","ts":1793566931132,"field":"severity","old":"none","new":"high"}]}