{"id":"CVE-2026-110688","revision":"2b34dcc0efbb4554838b90e745cd2e20","records":[{"revision":"2b34dcc0efbb4554838b90e745cd2e20","observedAt":"2026-10-29T19:28:49.708+00:00","statement":{"source":"cve-program","id":"CVE-2026-110688","aliases":[],"title":"Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incr_parse","description":"Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incr_parse.\n\nAt the first non-ASCII byte in a string, the decoder validates UTF-8 from there to the end of its input. incr_parse decodes each buffered value with a fresh decoder, so every value revalidates the rest of the buffer, and doubling the input quadruples the work.\n\nA peer that sends about a megabyte of ordinary non-ASCII JSON in one read ties up the process for seconds of CPU time.","state":0,"publishedAt":"2026-10-19T18:12:25.276+00:00","modifiedAt":"2026-10-29T17:18:17.844+00:00","affected":[{"ecosystem":"https://cpan.org/modules","name":"Cpanel-JSON-XS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://cpan.org/modules\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"modules\": [\n                        \"Cpanel::JSON::XS\"\n                    ],\n                    \"packageName\": \"Cpanel-JSON-XS\",\n                    \"packageURL\": \"pkg:cpan/Cpanel-JSON-XS\",\n                    \"programFiles\": [\n                        \"XS.xs\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"Cpanel::JSON::XS::incr_parse\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/rurban/Cpanel-JSON-XS\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"4.80\",\n                            \"status\": \"affected\",\n                            \"version\": \"4.51\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/rurban/Cpanel-JSON-XS/commit/384309f6a297384e69c851b5d64e1c421d9b2dcc.patch","https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110688","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110688","identifiers":["CVE-2026-110688"]},"retained":false,"historicalAffected":[]}],"coverage":[]}