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@dependabot dependabot bot commented on behalf of github Nov 2, 2025

Bumps rack from 2.2.17 to 2.2.21.

Changelog

Sourced from rack's changelog.

[2.2.21] - 2025-11-03

Fixed

  • Multipart parser: limit MIME header size check to the unread buffer region to avoid false multipart mime part header too large errors when previously read data accumulates in the scan buffer. (#2392, @​alpaca-tc, @​willnet, @​krororo)

[2.2.20] - 2025-10-10

Security

  • CVE-2025-61780 Improper handling of headers in Rack::Sendfile may allow proxy bypass.
  • CVE-2025-61919 Unbounded read in Rack::Request form parsing can lead to memory exhaustion.

[2.2.19] - 2025-10-07

Security

  • CVE-2025-61772 Multipart parser buffers unbounded per-part headers, enabling DoS (memory exhaustion)
  • CVE-2025-61771 Multipart parser buffers large non‑file fields entirely in memory, enabling DoS (memory exhaustion)
  • CVE-2025-61770 Unbounded multipart preamble buffering enables DoS (memory exhaustion)

[2.2.18] - 2025-09-25

Security

  • CVE-2025-59830 Unbounded parameter parsing in Rack::QueryParser can lead to memory exhaustion via semicolon-separated parameters.
Commits
  • 851dc02 Bump patch version.
  • 1e6aeda Allow Multipart head to span read boundary. (#2392)
  • 6ef5915 Bump patch version.
  • 4e2c903 Unbounded read in Rack::Request form parsing can lead to memory exhaustion.
  • fba2c8b Improper handling of proxy headers in Rack::Sendfile may allow proxy bypass.
  • ed3d834 Normalize adivsories links.
  • 4c4ea29 Bump patch version.
  • c370dcd Limit amount of retained data when parsing multipart requests
  • d869fed Fix denial of service vulnerbilties in multipart parsing
  • 0f76d43 Bump patch version.
  • Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request
Dependency Name Ignore Conditions
rack [>= 3.0.a, < 3.1]

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Bumps [rack](https://github.com/rack/rack) from 2.2.17 to 2.2.21.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.17...v2.2.21)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 2.2.21
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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@dependabot dependabot bot added the dependabot Pull requests that update a dependency file label Nov 2, 2025
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