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Security Policy

Supported Versions

Security fixes will be backported only to the rustls versions for which the original semver-compatible release was published less than 2 years ago.

For example, as of 2024-04-18 the latest release is 0.23.4.

  • 0.23.0 was released in February of 2024
  • 0.22.0 was released in December of 2023
  • 0.21.0 was released in March of 2023
  • 0.20.0 was released in September of 2021
  • 0.19.0 was released in November of 2020

Therefore 0.23.x, 0.22.x and 0.21.x will be updated, while 0.20.x and 0.19.x will not be.

Note: We use the date of publication when evaluating the security policy. For example, while the Rustls 0.20.0 GitHub release note was created Jul, 2023 the actual release in was published in Sept. 2021.

Reporting a Vulnerability

Please report security bugs via github. We'll then:

  • Prepare a fix and regression tests.
  • Backport the fix and make a patch release for most recent release.
  • Submit an advisory to rustsec/advisory-db.
  • Refer to the advisory on the main and release notes.

If you're looking for security bugs, this crate is set up for cargo fuzz but would benefit from more runtime, targets and corpora.