{"id":"CVE-2026-110675","published":"2026-10-19T19:17:21.210","lastModified":"2026-10-19T20:50:17.967","description":"Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl accept malformed UTF-8 in bare hash keys under allow_barekey in decode_hv.\n\nWith utf8 and allow_barekey, which relaxed enables, a quoted key is validated as UTF-8 but a bare key's bytes are stored as a UTF-8 flagged string without any check. Malformed UTF-8, control bytes and backslashes reach the decoded hash, while malformed UTF-8 and control bytes in a quoted key or a value are rejected.\n\nLater operations on the key, including lc, uc or encoding the hash again, die with a malformed UTF-8 error.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-1286"],"vendors":[],"products":[],"references":[{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/c2cd02281b9d6904ca0aff2740154e742abc070c.patch","tags":[]},{"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes","tags":[]}],"exploitRefs":[{"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/c2cd02281b9d6904ca0aff2740154e742abc070c.patch","tags":[]}],"hasPoc":true,"ai":null}