Cpanel::JSON::XS before 4.80 has 15 Perl JSON flaws
The notice describes decoded-key leakage, stack exhaustion under allow_tags, and missed duplicate non-ASCII bare keys.
42
CVE-2026-110672
- CVSS 3.1
- 7.5 high
- EPSS
- —
- Published
- ·
- Modified
Description · NVD
Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when the object is rejected for a missing ':' after the key or, from 4.09, for a duplicate key. Duplicate keys are an error unless allow_dupkeys, dupkeys_as_arrayref or relaxed is set. A process that keeps running after a failed decode retains one key per rejected document, with its size chosen by the sender. Repeated requests exhaust process memory.
- Weakness
- CWE-401
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H