CVE-2026-110688 Affecting libcpanel-json-xs-perl package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-LIBCPANELJSONXSPERL-21249322
- published20 Oct 2026
- disclosed19 Oct 2026
Introduced: 19 Oct 2026
NewCVE-2026-110688 (opens in a new tab)How to fix?
There is no fixed version for Debian:13 libcpanel-json-xs-perl.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcpanel-json-xs-perl package and not the libcpanel-json-xs-perl package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incr_parse.
At the first non-ASCII byte in a string, the decoder validates UTF-8 from there to the end of its input. incr_parse decodes each buffered value with a fresh decoder, so every value revalidates the rest of the buffer, and doubling the input quadruples the work.
A peer that sends about a megabyte of ordinary non-ASCII JSON in one read ties up the process for seconds of CPU time.