Improper Validation of Specified Type of Input Affecting github.com/vmihailenco/msgpack/v5 package, versions >=0.0.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published20 Mar 2026
- disclosed16 Mar 2026
- creditNational Security Agency
Introduced: 16 Mar 2026
CVE-2026-2454 (opens in a new tab)How to fix?
There is no fixed version for github.com/vmihailenco/msgpack/v5.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input in the calls plugin when handling websocket messages containing malformed msgpack frames. An attacker can cause the server to consume excessive memory and crash by sending specially crafted websocket requests.