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.
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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
Upgrade to Cpanel-JSON-XS 4.80 or later.
Workaround
No workaround given by the vendor.
References
History
Mon, 19 Oct 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rurban
Rurban cpanel::json::xs |
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| 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 |
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Projects
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Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-10-19T18:12:19.804Z
Reserved: 2026-10-14T13:26:57.076Z
Link: CVE-2026-110686
No data.
Status : Awaiting Analysis
Published: 2026-10-19T19:17:22.200
Modified: 2026-10-19T20:50:17.967
Link: CVE-2026-110686
No data.
OpenCVE Enrichment
Updated: 2026-10-19T21:30:03Z
Weaknesses