libcpanel-json-xs-perl: Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level num...
CVE-2026-110682 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-110682, released October 24, 2026. It is not reported as exploited. Patch Radar priority: High.
Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incr_parse. allow_nonref is enabled by default and incr_parse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes whatever has arrived. The bytes 12 decode as one value when read together, but as 1 and then 2 when split across two reads. A peer that can influence read boundaries can change how many messages a stream consumer decodes and what values they carry.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libcpanel-json-xs-perl · Debian 14 | 4.80-1 | DEBIAN-CVE-2026-110682 | Oct 24, 2026 |
| perl-Cpanel-JSON-XS · Fedora 43 | 4.80-1.fc43 | FEDORA-2026-4447E52D23 | Nov 7, 2026 |
| perl-Cpanel-JSON-XS · opensuse-leap 16.0 | 4.800.0-bp160.1.1 | OPENSUSE-SU-2026:22187-1 | Nov 7, 2026 |
| perl-Cpanel-JSON-XS · sles 15.7 | 4.800.0-150700.3.9.1 | SUSE-SU-2026:4926-1 | Nov 7, 2026 |
| perl-Cpanel-JSON-XS-debuginfo · Fedora 43 | 4.80-1.fc43 | FEDORA-2026-4447E52D23 | Nov 7, 2026 |
| perl-Cpanel-JSON-XS-debugsource · Fedora 43 | 4.80-1.fc43 | FEDORA-2026-4447E52D23 | Nov 7, 2026 |
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