{"id":"CVE-2026-110677","summary":"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","details":"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.","modified":"2026-10-20T02:44:12.125771859Z","published":"2026-10-19T18:11:53.004Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110677.json","cna_assigner":"CPANSec","cwe_ids":["CWE-401"]},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110677.json"},{"type":"PACKAGE","url":"https://github.com/rurban/Cpanel-JSON-XS"},{"type":"FIX","url":"https://github.com/rurban/Cpanel-JSON-XS/commit/edb13030a708afc2cde0d2629fb6bdd31288ce6c.patch"},{"type":"ADVISORY","url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110677"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rurban/cpanel-json-xs","events":[{"introduced":"4291b3aad686359bd6711b0da3e43c99a0a15d21"},{"fixed":"5552a527abb648d9eb4134e91412800013ddecb9"}],"database_specific":{"extracted_events":[{"introduced":"4.28"},{"fixed":"4.80"}],"source":"AFFECTED_FIELD"}}],"versions":["4.53","4.52","4.51","4.50","4.44","4.43","4.42","4.41","4.40","4.39","4.38","4.37","4.36","4.35","4.34","4.33","4.32","4.31","4.30","4.29","4.28"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110677.json"}}],"schema_version":"1.9.0"}