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chore(deps): update rust crate rustls to v0.23.45 [security] - #263

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This PR contains the following updates:

Package Type Update Change
rustls dependencies patch 0.23.440.23.45

TLS 1.3 handshake messages incorrectly accepted across encryption level boundaries

GHSA-2mjx-qc3c-rqvc / RUSTSEC-2026-0285

More information

Details

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 "unexpected_message"
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's
GO-2026-4340 (CVE-2025-61730).

Severity

  • CVSS Score: 5.3 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

This data is provided by OSV and the Rust Advisory Database (CC0 1.0).


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@ferrlabs-renovate ferrlabs-renovate Bot added the security Security-related label Sep 14, 2026
@ferrlabs-renovate
ferrlabs-renovate Bot enabled auto-merge (squash) September 14, 2026 21:48
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@ferrlabs-renovate
ferrlabs-renovate Bot merged commit faf8455 into main Sep 15, 2026
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@ferrlabs-renovate
ferrlabs-renovate Bot deleted the renovate/crate-rustls-vulnerability branch September 15, 2026 04:31
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