{"api_version":"1","generated_at":"2026-11-05T05:38:46+00:00","cve":"CVE-2026-110677","urls":{"html":"https://cve.report/CVE-2026-110677","api":"https://cve.report/api/cve/CVE-2026-110677.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-110677","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110677"},"summary":{"title":"Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv","description":"Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv.\n\nWith dupkeys_as_arrayref, the values of a duplicate object key are collected into a new array. An extra reference is never released, so the array and every value in it outlive the decoded structure. The array also leaks when decoding fails after a duplicate key.\n\nRepeatedly decoding untrusted JSON with a duplicate key holding a large value exhausts process memory.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-10-19 19:17:21","updated_at":"2026-10-29 17:18:00"},"problem_types":["CWE-401","CWE-401 CWE-401 Missing Release of Memory after Effective Lifetime"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"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/edb13030a708afc2cde0d2629fb6bdd31288ce6c.patch","name":"https://github.com/rurban/Cpanel-JSON-XS/commit/edb13030a708afc2cde0d2629fb6bdd31288ce6c.patch","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110677","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110677","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":{"cve_year":"2026","cve_id":"110677","cve":"CVE-2026-110677","epss":"0.001710000","percentile":"0.064950000","score_date":"2026-10-29","updated_at":"2026-10-30 00:05:32"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-110677","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-10-29T16:43:11.877857Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-10-29T16:43:21.148Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"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":"decode_hv"}],"repo":"https://github.com/rurban/Cpanel-JSON-XS","versions":[{"lessThan":"4.80","status":"affected","version":"4.28","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv.\n\nWith dupkeys_as_arrayref, the values of a duplicate object key are collected into a new array. 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An extra reference is never released, so the array and every value in it outlive the decoded structure. The array also leaks when decoding fails after a duplicate key.\n\nRepeatedly decoding untrusted JSON with a duplicate key holding a large value exhausts process memory.","Type":"Description","Title":"Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak th"}]}}}