github-actions[bot] opened a new issue, #3222:
URL: https://github.com/apache/iceberg-rust/issues/3222

   
   > TLS 1.3 handshake messages incorrectly accepted across encryption level 
boundaries
   
   | Details             |                                                |
   | ------------------- | ---------------------------------------------- |
   | Package             | `rustls`                      |
   | Version             | `0.23.41`                   |
   | URL                 | 
[https://github.com/rustls/rustls/security/advisories/GHSA-2mjx-qc3c-rqvc](https://github.com/rustls/rustls/security/advisories/GHSA-2mjx-qc3c-rqvc)
 |
   | Date                | 2026-09-14                         |
   | Patched versions    | `>=0.23.45`                  |
   | Unaffected versions | `<0.23.13`               |
   
   Rustls accepted TLS 1.3 handshake messages sent at the wrong encryption level
   when they followed a key-changing message in the same record. For example,
   a plaintext `EncryptedExtensions` message packed into the same record as the
   `ServerHello` was accepted.
   
   RFC 8446 section 5.1 requires that handshake messages do not span key 
changes,
   and that implementations terminate the connection with an 
&quot;unexpected_message&quot;
   alert if they do.
   
   The handshake transcript is still authenticated, so a network-position 
attacker
   cannot use this to alter or complete a handshake; the practical effect is 
that
   a peer could send handshake messages that should be encrypted in plaintext
   without rustls rejecting the connection.
   
   This is functionally the same bug as Go&#39;s
   [GO-2026-4340](https://pkg.go.dev/vuln/GO-2026-4340) (CVE-2025-61730).
   
   See [advisory page](https://rustsec.org/advisories/RUSTSEC-2026-0285.html) 
for additional details.
   


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