What’s Vulnerable › Vulnerabilities

CVE-2020-36443

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-08 · updated 2026-06-17
• Weakness: CWE-908

Description

An issue was discovered in the libp2p-deflate crate before 0.27.1 for Rust. An uninitialized buffer is passed to AsyncRead::poll_read(), which is a user-provided trait function.

Affected products

• Libp2P-Deflate: before 0.27.1 — fixed in 0.27.1

How to fix

Upgrade to a fixed version: Libp2P-Deflate 0.27.1. Check the vendor advisory for mitigations.

References

• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libp2p-deflate/RUSTSEC-2020-0123.md
• https://rustsec.org/advisories/RUSTSEC-2020-0123.html
• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libp2p-deflate/RUSTSEC-2020-0123.md
• https://rustsec.org/advisories/RUSTSEC-2020-0123.html

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