{"api_version":"1","generated_at":"2026-10-21T22:59:24+00:00","cve":"CVE-2026-110688","urls":{"html":"https://cve.report/CVE-2026-110688","api":"https://cve.report/api/cve/CVE-2026-110688.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-110688","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110688"},"summary":{"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":"PUBLISHED","assigner":"CPANSec","published_at":"2026-10-19 19:17:22","updated_at":"2026-10-19 20:50:17"},"problem_types":["CWE-407","CWE-407 CWE-407 Inefficient Algorithmic Complexity"],"metrics":[],"references":[{"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes","name":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/384309f6a297384e69c851b5d64e1c421d9b2dcc.patch","name":"https://github.com/rurban/Cpanel-JSON-XS/commit/384309f6a297384e69c851b5d64e1c421d9b2dcc.patch","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110688","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110688","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[{"source":"CNA","time":"2026-10-14T00:00:00.000Z","lang":"en","value":"Version 4.80 released with fix."}],"solutions":[{"source":"CNA","title":"","value":"Upgrade to Cpanel-JSON-XS 4.80 or later.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"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":{"dateUpdated":"2026-10-19T18:12:25.276Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"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"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-110688","datePublished":"2026-10-19T18:12:25.276Z","dateReserved":"2026-10-14T13:27:36.845Z","dateUpdated":"2026-10-19T18:12:25.276Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-19 19:17:22","lastModifiedDate":"2026-10-19 20:50:17","problem_types":["CWE-407","CWE-407 CWE-407 Inefficient Algorithmic Complexity"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"110688","Ordinal":"1","Title":"Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow q","CVE":"CVE-2026-110688","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"110688","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow q"}]}}}