{"id":"CVE-2026-110687","summary":"Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp","details":"Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp.\n\ncanonical sorts keys by UTF-16 code units. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encoder writes out as Latin-1 characters. A byte-string key whose bytes are valid UTF-8 is sorted out of order, and two keys that encode differently can compare equal and are left in hash order.\n\nThe same data can encode to different canonical documents across processes.","modified":"2026-10-20T02:44:14.961011091Z","published":"2026-10-19T18:12:22.028Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110687.json","cna_assigner":"CPANSec","cwe_ids":["CWE-176"]},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110687.json"},{"type":"PACKAGE","url":"https://github.com/rurban/Cpanel-JSON-XS"},{"type":"FIX","url":"https://github.com/rurban/Cpanel-JSON-XS/commit/bb9da30b67f637f4d57922f0e043376363f28f0c.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-2026-110687"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rurban/cpanel-json-xs","events":[{"introduced":"9ca95d3a8edefe6354f17e93f564b4dce63d73df"},{"fixed":"5552a527abb648d9eb4134e91412800013ddecb9"}],"database_specific":{"extracted_events":[{"introduced":"4.43"},{"fixed":"4.80"}],"source":"AFFECTED_FIELD"}}],"versions":["4.53","4.52","4.51","4.50","4.44","4.43"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110687.json"}}],"schema_version":"1.9.0"}