# cPanel JSON::XS vulnerabilities Source: https://junglewise.ai/threats/technologies/json-xs Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/json-xs.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 8 vulnerabilities in cPanel JSON::XS: 0 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-110687, was published on 19 October 2026. 6 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 6 - Last 90 days: 6 - All time: 8 (0 critical, 0 exploited in the wild) ## About cPanel JSON::XS A Perl module for high-performance serializing and deserializing of JSON data. ## Latest cPanel JSON::XS vulnerabilities - [CVE-2026-110687: Cpanel::JSON::XS canonical encoding misorders byte-string keys](https://junglewise.ai/threats/cve-2026-110687-cpanel-json-xs-versions-from-4-43-before-4-80-for-perl-misorder) (info, published 19 Oct 2026) - [CVE-2026-110682: Cpanel::JSON::XS incremental parser number ambiguity in incr_parse](https://junglewise.ai/threats/cve-2026-110682-cpanel-json-xs-versions-from-4-42-before-4-80-for-perl-let-input) (info, published 19 Oct 2026) - [CVE-2026-110677: Cpanel::JSON::XS memory leak in dupkeys_as_arrayref](https://junglewise.ai/threats/cve-2026-110677-cpanel-json-xs-versions-from-4-28-before-4-80-for-perl-leak-the) (info, published 19 Oct 2026) - [CVE-2026-110674: Cpanel::JSON::XS type confusion in duplicate key handling](https://junglewise.ai/threats/cve-2026-110674-cpanel-json-xs-versions-from-4-33-before-4-80-for-perl-miss) (info, published 19 Oct 2026) - [CVE-2026-110673: Cpanel::JSON::XS stack exhaustion in decode_tag with allow_tags](https://junglewise.ai/threats/cve-2026-110673-cpanel-json-xs-versions-before-4-80-for-perl-allow-stack) (info, published 19 Oct 2026) - [CVE-2026-110672: Cpanel::JSON::XS memory leak in decode_hv with rejected keys](https://junglewise.ai/threats/cve-2026-110672-cpanel-json-xs-versions-before-4-80-for-perl-leak-the-decoded) (info, published 19 Oct 2026) - [CVE-2026-9516: Cpanel Cpanel::JSON::XS denial of service via UTF-8 BOM input](https://junglewise.ai/threats/cve-2026-9516-cpanel-cpanel-json-xs-denial-of-service-via-utf-8-bom-input) (info, CVSS 7.5, published 3 Jun 2026) - [CVE-2026-9334: Cpanel::JSON::XS type confusion via duplicate object keys](https://junglewise.ai/threats/cve-2026-9334-cpanel-json-xs-type-confusion-via-duplicate-object-keys) (info, CVSS 0, published 3 Jun 2026) ## Most severe cPanel JSON::XS vulnerabilities - [CVE-2026-9516: Cpanel Cpanel::JSON::XS denial of service via UTF-8 BOM input](https://junglewise.ai/threats/cve-2026-9516-cpanel-cpanel-json-xs-denial-of-service-via-utf-8-bom-input) (info, CVSS 7.5, published 3 Jun 2026) - [CVE-2026-9334: Cpanel::JSON::XS type confusion via duplicate object keys](https://junglewise.ai/threats/cve-2026-9334-cpanel-json-xs-type-confusion-via-duplicate-object-keys) (info, CVSS 0, published 3 Jun 2026) - [CVE-2026-110687: Cpanel::JSON::XS canonical encoding misorders byte-string keys](https://junglewise.ai/threats/cve-2026-110687-cpanel-json-xs-versions-from-4-43-before-4-80-for-perl-misorder) (info, published 19 Oct 2026) - [CVE-2026-110682: Cpanel::JSON::XS incremental parser number ambiguity in incr_parse](https://junglewise.ai/threats/cve-2026-110682-cpanel-json-xs-versions-from-4-42-before-4-80-for-perl-let-input) (info, published 19 Oct 2026) - [CVE-2026-110677: Cpanel::JSON::XS memory leak in dupkeys_as_arrayref](https://junglewise.ai/threats/cve-2026-110677-cpanel-json-xs-versions-from-4-28-before-4-80-for-perl-leak-the) (info, published 19 Oct 2026) - [CVE-2026-110674: Cpanel::JSON::XS type confusion in duplicate key handling](https://junglewise.ai/threats/cve-2026-110674-cpanel-json-xs-versions-from-4-33-before-4-80-for-perl-miss) (info, published 19 Oct 2026) - [CVE-2026-110673: Cpanel::JSON::XS stack exhaustion in decode_tag with allow_tags](https://junglewise.ai/threats/cve-2026-110673-cpanel-json-xs-versions-before-4-80-for-perl-allow-stack) (info, published 19 Oct 2026) - [CVE-2026-110672: Cpanel::JSON::XS memory leak in decode_hv with rejected keys](https://junglewise.ai/threats/cve-2026-110672-cpanel-json-xs-versions-before-4-80-for-perl-leak-the-decoded) (info, published 19 Oct 2026) ## Vulnerabilities per week 6 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 6 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other cPanel technologies - [cPanel](https://junglewise.ai/threats/technologies/cpanel-cpanel): 5 vulnerabilities - [cPanel Whm](https://junglewise.ai/threats/technologies/cpanel-whm-1): 4 vulnerabilities - [cPanel Control Web Panel](https://junglewise.ai/threats/technologies/control-web-panel): 3 vulnerabilities - [cPanel WP Squared](https://junglewise.ai/threats/technologies/wp-squared): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "cPanel JSON::XS vulnerabilities", https://junglewise.ai/threats/technologies/json-xs, 9 November 2026.