PT-2026-108058 · Npm · Msgpack5
CVE-2026-107298
·
Published
2026-10-08
·
Updated
2026-10-08
CVSS v3.1
5.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Name of the Vulnerable Software and Affected Versions
msgpack5 versions prior to 6.1.0
Description
The array and map decoding paths lack a nesting-depth limit. An attacker providing MessagePack input can submit deeply nested containers to exhaust the JavaScript call stack, which interrupts the process, worker, or request handler.
Recommendations
Update to version 6.1.0.
Reject deeply nested input before decoding.
Isolate decoding in a worker.
Enforce a trusted schema with a bounded nesting depth.
Exploit
Fix
Uncontrolled Recursion
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Weakness Enumeration
Related Identifiers
Affected Products
Msgpack5