CVE-2026-107300 (GCVE-0-2026-107300)

Vulnerability from cvelistv5 – Published: 2026-10-08 17:11 – Updated: 2026-10-08 17:52
VLAI
Title
msgpack5: Many buffered values can exhaust the streaming decoder stack
Summary
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder recursively invokes itself for each complete MessagePack value remaining in a chunk. A remote peer can send one chunk containing many small valid values, causing recursion proportional to the value count, exhausting the JavaScript call stack, and interrupting the process or stream. This issue is fixed in version 6.1.0.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 17:52 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7712 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
mcollina msgpack5 Affected: < 6.1.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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