CVE-2026-110673 Affecting libcpanel-json-xs-perl package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.49% (42nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBCPANELJSONXSPERL-21279803
  • published20 Oct 2026
  • disclosed19 Oct 2026

Introduced: 19 Oct 2026

NewCVE-2026-110673  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest 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 Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Cpanel::JSON::XS versions before 4.80 for Perl allow stack exhaustion via nested tagged values under allow_tags in decode_tag.

With allow_tags, "(" starts a tagged value. Its tag and value are decoded recursively, and each can start another tagged value. Unlike arrays and objects, this nesting is not counted against max_depth.

A run of "(" bytes exhausts the C stack and triggers an uncatchable segmentation fault regardless of max_depth.

CVSS Base Scores

version 3.1