CVE-2026-124539
JSON::XS versions before 4.05 for Perl leak the decoded key of an object rejected for a missing colon in decode_hv
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
JSON::XS versions before 4.05 for Perl leak the decoded key of an object rejected for a missing colon in decode_hv. Unless it is short plain ASCII, a quoted key is decoded into a new scalar. Nothing frees that scalar when the object is rejected for a missing ':' after the key. 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.
| CWE | CWE-401 |
| Published | Nov 14, 2026 |
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