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GHSA-2hfw-w739-p7x5: Duplicate Advisory: nano-id reduced entropy due to inadequate character set usage

June 4, 2024 (updated February 2, 2026)

Affected versions of the nano-id crate incorrectly generated IDs using a reduced character set in the nano_id::base62 and nano_id::base58 functions. Specifically, the base62 function used a character set of 32 symbols instead of the intended 62 symbols, and the base58 function used a character set of 16 symbols instead of the intended 58 symbols. Additionally, the nano_id::gen macro is also affected when a custom character set that is not a power of 2 in size is specified.

It should be noted that nano_id::base64 is not affected by this vulnerability.

References

  • github.com/advisories/GHSA-2hfw-w739-p7x5
  • github.com/viz-rs/nano-id
  • github.com/viz-rs/nano-id/commit/a9022772b2f1ce38929b5b81eccc670ac9d3ab23
  • rustsec.org/advisories/RUSTSEC-2024-0343.html

Code Behaviors & Features

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Affected versions

All versions before 0.4.0

Fixed versions

  • 0.4.0

Solution

Upgrade to version 0.4.0 or above.

Impact 9.4 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Learn more about CVSS

Weakness

  • CWE-331: Insufficient Entropy

Source file

cargo/nano-id/GHSA-2hfw-w739-p7x5.yml

Spotted a mistake? Edit the file on GitLab.

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