Information Exposure Affecting rustls package, versions >=0.23.13 <0.23.45
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Test your applications- Snyk IDSNYK-RUST-RUSTLS-20883247
- published13 Oct 2026
- disclosed5 Oct 2026
- creditUnknown
Introduced: 5 Oct 2026
New CVE NOT AVAILABLE CWE-200 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade rustls to version 0.23.45 or higher.
Overview
rustls is a modern TLS library in Rust.
Affected versions of this package are vulnerable to Information Exposure in the processing of TLS 1.3 handshake messages across encryption level boundaries. An attacker can cause plaintext handshake messages to be accepted when they should be encrypted by injecting such messages in the same record as a key-changing message.