Description
Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv.

A decode copies the parser's filter_json_object and filter_json_single_key_object callbacks without taking references to them. A filter callback that removes the last single-key filter frees the callback table while the decode in progress still uses it. The next object is dispatched through freed memory and can crash the process.
Published: 2026-10-19
Score: n/a
EPSS: n/a
KEV: No
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Remediation

Vendor Solution

Upgrade to Cpanel-JSON-XS 4.80 or later.

Tracking

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History

Mon, 19 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Rurban
Rurban cpanel::json::xs
Vendors & Products Rurban
Rurban cpanel::json::xs

Mon, 19 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv. A decode copies the parser's filter_json_object and filter_json_single_key_object callbacks without taking references to them. A filter callback that removes the last single-key filter frees the callback table while the decode in progress still uses it. The next object is dispatched through freed memory and can crash the process.
Title Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv
Weaknesses CWE-416
References

Subscriptions

Rurban Cpanel::json::xs
cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-10-19T18:12:19.804Z

Reserved: 2026-10-14T13:26:57.076Z

Link: CVE-2026-110686

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-19T19:17:22.200

Modified: 2026-10-19T20:50:17.967

Link: CVE-2026-110686

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T21:30:03Z

Weaknesses