| Name | CVE-2026-110675 |
| 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. With 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. Later operations on the key, including lc, uc or encoding the hash again, die with a malformed UTF-8 error. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libcpanel-json-xs-perl (PTS) | bookworm, bookworm (security) | 4.35-1+deb12u1 | vulnerable |
| trixie (security), trixie | 4.39-2~deb13u1 | vulnerable | |
| forky, sid | 4.80-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libcpanel-json-xs-perl | source | (unstable) | 4.80-1 |
https://lists.security.metacpan.org/cve-announce/msg/44479714/
Fixed by: https://github.com/rurban/Cpanel-JSON-XS/commit/c2cd02281b9d6904ca0aff2740154e742abc070c (4.80)