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rack-protection

Protect against typical web attacks, works with all Rack apps, including Rails.

About
rackrubysinatraweb-framework
github.com/sinatra/sinatrasinatrarb.com/protection/MIThttps://github.com/sinatra/sinatra/graphs/contributors12.5k · 2.1k forks · 529 contributors
Compare
Compares against 4.2.1 (latest stable)
Latest Stable4.2.1Oct 10, 2025
Latest RC2.0.1.rc1Feb 13, 2018
Latest Beta2.0.0.beta2Aug 22, 2016
Release cadenceEvery 4 months
Last releaseOct 10, 2025
Open advisories0
Changelog quality100% curated
CHANGELOG
Release history SecurityYou're on
3.x4.x
STABLE · RCPRE-RELEASE2023AprJulOct2024AprJulOct2025AprJulOct

39 older or filtered releases not shown.

Upgrade guides

Breaking changes and a migration checklist for each major version
rack-protection 3 → 43.2.0 → 4.2.1Oct 10, 2025 BreakingBreaking4Security2Platform1New3Changed2Fixed11rack-protection 2 → 32.2.4 → 3.2.0Dec 29, 2023 UnknownNew7Fixed6rack-protection 1 → 21.5.5 → 2.2.4Dec 16, 2022 Unknownrack-protection 0.1 → 10.1.0 → 1.5.5Mar 7, 2018 Unknown
VersionChannelDateChangesSecurity
4.2.1 StableOct 10, 2025Fixed14.2.0 StableOct 8, 2025Security1New1Fixed34.1.1 youStableNov 20, 2024Fixed14.1.0 StableNov 18, 2024Security1New1Fixed84.0.1 StableMay 23, 2025Changed2Fixed64.0.0 StableJan 19, 2024Breaking4Platform1New13.2.0 StableDec 29, 2023New3Fixed43.1.0 StableAug 7, 2023New4Fixed23.0.6 StableApr 11, 2023No changes listed3.0.5 StableDec 16, 2022No changes listed3.0.4 StableNov 25, 2022No changes listed3.0.3 StableNov 11, 2022No changes listed3.0.2 StableOct 1, 2022No changes listed3.0.1 StableSep 26, 2022No changes listed3.0.0 StableSep 26, 2022No changes listed2.2.4 StableDec 16, 2022No changes listed2.2.3 StableNov 25, 2022No changes listed2.2.2 StableJul 23, 2022No changes listed2.2.1 StableJul 15, 2022No changes listed2.2.0 StableFeb 15, 2022No changes listed