CVE & CISA-KEV Catalog

CVE-2026-110680

UNSCORED
NVD

Description

Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv. With canonical, the keys of a tied or threads::shared hash are counted before a second pass collects them for sorting. The encoder uses a fixed 64-entry stack array or, for larger counts, a heap array sized from the first pass. If the second pass exceeds that capacity, entries are written out of bounds before the counts are compared. This corrupts stack or heap memory and can crash the process.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
libcpanel-json-xs-perlDebian
Fixed in:4.80-1CVE-2026-110680

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.17%probability of exploitation in 30 days
6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2008-2992High7.8100%KEV + Ransom-

Common questions

How do I fix CVE-2026-110680?

Upgrade libcpanel-json-xs-perl on debian unstable to 4.80-1 or later.

Is CVE-2026-110680 being actively exploited?

Not that we know of. CVE-2026-110680 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.17% is the estimated probability that it will be exploited in the next 30 days. That is higher than 6% of all scored CVEs.

What does CVE-2026-110680 affect?

Published advisories record a fix for libcpanel-json-xs-perl (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-19.