medium5.3
CVE-2026-107298
msgpack5 is a msgpack v5 implementation for node.js and the browser.
Impact
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the array and map decoding paths have no nesting-depth limit, allowing an attacker who can provide MessagePack input to submit deeply nested containers that exhaust the JavaScript call stack and interrupt a process, worker, or request handler. This issue is fixed in version 6.1.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | msgpack5 | < 6.1.0 | 6.1.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-24ch-f2g6-9hhh
- https://github.com/mcollina/msgpack5/security/advisories/GHSA-24ch-f2g6-9hhh
- https://github.com/mcollina/msgpack5/commit/1e2b5874e555dd7c99417f64788a03b0590bb102
- https://github.com/mcollina/msgpack5/releases/tag/v6.1.0