Live › vulnerability › CVE-2026-110672
Go to dashboardCpanel::JSON::XS before 4.80 for Perl leaks the decoded key of a JSON object rejected for a duplicate key or a missing colon. A long-running process that keeps handling bad documents accumulates one leaked key per rejected document, so repeated requests can exhaust its memory.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Perl applications that decode untrusted JSON with Cpanel::JSON::XS in a process that keeps running after a failed decode, such as a web service, daemon or queue worker. Short-lived scripts that exit after each decode are not meaningfully exposed. Systems that never parse untrusted JSON with this module can skip it.
No product ranges from the sources yet.
perl -MCpanel::JSON::XS -e 'print $Cpanel::JSON::XS::VERSION', or cpanm --info Cpanel::JSON::XS.Cpanel::JSON::XS below 4.80.4.80 or later.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv.
A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when the object is rejected for a missing ':' after the key or, from 4.09, for a duplicate key. Duplicate keys are an error unless allow_dupkeys, dupkeys_as_arrayref or relaxed is set.
A process that keeps running after a failed decode retains one key per rejected document, with its size chosen by the sender. Repeated requests exhaust process memory.
This page as .md · .json · in your agent: get_signal("CVE-2026-110672")
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.