CVE-2026-88351: n/a
An integer overflow vulnerability in MPack 1.1.1 on 32-bit platforms allows heap-buffer-overflow and memory corruption when parsing crafted MessagePack array32 or map32 objects with large element counts. This can lead to denial of service.
AI Analysis
Technical Summary
CVE-2026-88351 describes an integer overflow in the MPack Node API of MPack version 1.1.1 on 32-bit platforms. The vulnerability occurs during parsing of specially crafted MessagePack array32 or map32 objects with excessively large element counts. The function mpack_tree_parse_children() calculates the page allocation size using a size_t variable, which can overflow, resulting in an undersized heap allocation. Subsequent writes to mpack_node_data_t structures exceed the allocated buffer, causing heap-buffer-overflow, memory corruption, and potential denial of service.
Potential Impact
Successful exploitation can cause heap-buffer-overflow leading to memory corruption and denial of service on affected 32-bit systems running MPack 1.1.1. There is no indication of remote code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-88351: n/a
Description
An integer overflow vulnerability in MPack 1.1.1 on 32-bit platforms allows heap-buffer-overflow and memory corruption when parsing crafted MessagePack array32 or map32 objects with large element counts. This can lead to denial of service.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88351 describes an integer overflow in the MPack Node API of MPack version 1.1.1 on 32-bit platforms. The vulnerability occurs during parsing of specially crafted MessagePack array32 or map32 objects with excessively large element counts. The function mpack_tree_parse_children() calculates the page allocation size using a size_t variable, which can overflow, resulting in an undersized heap allocation. Subsequent writes to mpack_node_data_t structures exceed the allocated buffer, causing heap-buffer-overflow, memory corruption, and potential denial of service.
Potential Impact
Successful exploitation can cause heap-buffer-overflow leading to memory corruption and denial of service on affected 32-bit systems running MPack 1.1.1. There is no indication of remote code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6ab53871f7a7c54106707edb
Added to database: 09/24/2026, 14:49:21 UTC
Last enriched: 09/24/2026, 15:03:37 UTC
Last updated: 09/24/2026, 16:09:13 UTC
Views: 5
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