CVE-2026-88351

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88351
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 15:17:50 UTC
Updated2026-09-24 21:08:55 UTC
DescriptionAn integer overflow vulnerability exists in the MPack Node API in MPack 1.1.1 on 32-bit platforms. When parsing a specially crafted MessagePack array32 or map32 object with an excessively large element count, the page allocation size calculation in mpack_tree_parse_children() can overflow size_t and produce an undersized allocation. Subsequent parsing writes mpack_node_data_t records beyond the allocated heap buffer, resulting in heap-buffer-overflow, memory corruption, and denial of service.

Risk And Classification

Problem Types: n/a

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/ludocode/mpack/commit/3d54d1215bdb5478d3ddecaf85884c58b382cd9b [email protected] github.com
github.com/ludocode/mpack/issues/123 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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