{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110688","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","state":"PUBLISHED","assignerShortName":"CPANSec","dateReserved":"2026-10-14T13:27:36.845Z","datePublished":"2026-10-19T18:12:25.276Z","dateUpdated":"2026-10-29T17:18:17.844Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","modules":["Cpanel::JSON::XS"],"packageName":"Cpanel-JSON-XS","packageURL":"pkg:cpan/Cpanel-JSON-XS","programFiles":["XS.xs"],"programRoutines":[{"name":"Cpanel::JSON::XS::incr_parse"}],"repo":"https://github.com/rurban/Cpanel-JSON-XS","versions":[{"lessThan":"4.80","status":"affected","version":"4.51","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-407","description":"CWE-407 Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec","dateUpdated":"2026-10-19T18:12:25.276Z"},"references":[{"tags":["patch"],"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/384309f6a297384e69c851b5d64e1c421d9b2dcc.patch"},{"tags":["release-notes"],"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"}],"solutions":[{"lang":"en","value":"Upgrade to Cpanel-JSON-XS 4.80 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-10-14T00:00:00.000Z","value":"Version 4.80 released with fix."}],"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","x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T17:18:10.148131Z","id":"CVE-2026-110688","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-29T17:18:17.844Z"}}]}}