🚨 [security] [ruby] Update jwt 2.10.2 → 3.2.0 (major) by depfu[bot] · Pull Request #123 · practical-computer/practical

depfu · 2026-05-18T18:10:36Z

🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

↗️ jwt (indirect, 2.10.2 → 3.2.0) · Repo · Changelog

Security Advisories 🚨

🚨 ruby-jwt: Empty-key HMAC bypass; cross-language sibling of CVE-2026-44351

JWT.decode(token, '', true, algorithm: 'HS256') accepts an attacker-forged token.
OpenSSL::HMAC.digest('SHA256', '', payload) returns a valid digest under an empty key, and no raise InvalidKeyError if key.empty? precondition exists in the HMAC algorithm.
JWT.decode(token, "", true, algorithm: 'HS256')
  -> JWA::Hmac.verify(verification_key: "", ...)
  -> OpenSSL::HMAC.digest('SHA256', "", signing_input) == signature
The same path is reached when a keyfinder block or key_finder: argument returns "", nil, or an
array containing nil for an unknown key. JWT::Decode#find_key only rejects literal nil and empty
arrays, and JWT::JWA::Hmac silently coerces nil to "" (signing_key ||= '') before signing.
JWT.decode(token, nil, true, algorithms: ['HS256']) { |_h| "" }
  -> find_key returns ""               # "" && !Array("").empty? == true
  -> JWA::Hmac.verify(verification_key: "", ...)
  -> verifies
Common application patterns that produce the unsafe value: redis.get("kid:#{kid}").to_s, ORM string columns with default: '', ENV['SECRET'] || '', Hash.new('') lookups, [primary, fallback] where fallback may be nil. Applications passing a non-empty static key:, or whose keyfinder returns nil / raises on miss, are not affected.

The existing enforce_hmac_key_length option would block this but defaults to false. On OpenSSL ≥ 3.5 the empty-key HMAC.digest call no longer raises, so the OpenSSL-3.0 rescue in JWA::Hmac#sign does not fire.

Affects HS256/HS384/HS512 via both JWT.decode (positional key and block keyfinder) and
JWT::EncodedToken#verify_signature!(key_finder:)

Release Notes

3.2.0

v3.2.0 (2026-05-13)

Full Changelog

Features:

Add enforce_hmac_key_length configuration option #716 - (@304)

Fixes and enhancements:

Reject nil and empty HMAC keys when signing and verifying (CVE-2026-45363 / GHSA-c32j-vqhx-rx3x)

Fix compatibility with the openssl 4.0 gem #706

Test against Ruby 4.0 on CI #707

Fix type error when header is not a JSON object #715 - (@304)

3.1.2

v3.1.2 (2025-06-28)

Full Changelog

Fixes and enhancements:

Avoid using the same digest across calls in JWT::JWA::Ecdsa and JWT::JWA::Rsa #697

Fix signing with a EC JWK #699 (@anakinj)

3.1.1

v3.1.1 (2025-06-24)

Full Changelog

Fixes and enhancements:

Require the algorithm to be provided when signing and verifying tokens using JWKs #695 (@anakinj)

3.1.0

v3.1.0 (2025-06-23)

Full Changelog

Features:

Add support for x5t header parameter for X.509 certificate thumbprint verification #669 (@hieuk09)

Raise an error if the ECDSA signing or verification key is not an instance of OpenSSL::PKey::EC #688 (@anakinj)

Allow OpenSSL::PKey::EC::Point to be used as the verification key in ECDSA #689 (@anakinj)

Require claims to have been verified before accessing the JWT::EncodedToken#payload #690 (@anakinj)

Support signing and verifying tokens using a JWK #692 (@anakinj)

3.0.0

v3.0.0 (2025-06-14)

Full Changelog

Breaking changes:

Require token signature to be verified before accessing payload #648 (@anakinj)

Drop support for the HS512256 algorithm #650 (@anakinj)

Remove deprecated claim verification methods #654 (@anakinj)

Remove dependency to rbnacl #655 (@anakinj)

Support only stricter base64 decoding (RFC 4648) #658 (@anakinj)

Custom algorithms are required to include JWT::JWA::SigningAlgorithm #660 (@anakinj)

Require RSA keys to be at least 2048 bits #661 (@anakinj)

Base64 encode and decode the k value for HMAC JWKs #662 (@anakinj)

Take a look at the upgrade guide for more details.

Features:

JWT::EncodedToken#verify! method that bundles signature and claim validation #647 (@anakinj)

Do not override the alg header if already given #659 (@anakinj)

Make JWK::KeyFinder compatible with JWT::EncodedToken #663 (@anakinj)

Fixes and enhancements:

Ruby 3.4 to CI matrix #649 (@anakinj)

Add logger as development dependency #670 (@hieuk09)

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ safety_net_attestation (indirect, 0.4.0 → 0.5.0) · Repo · Changelog

Release Notes

0.5.0 (from changelog)

Changed

Update jwt dependency to support both v2 and v3. (#23)

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 36 commits:

↗️ webauthn (indirect, 3.4.1 → 3.4.3) · Repo · Changelog

Release Notes

3.4.3 (from changelog)

Fixed

Fix RelyingParty#origin and WebAuthn.configuration.origin always returning nil. #484 @santiagorodriguez96

Now they return the allowed origin if allowed origins has only one element.

3.4.2 (from changelog)

Added

Updated safety_net_attestation dependency from ~> 0.4.0 to ~> 0.5.0.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 41 commits:

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Update jwt to version 3.2.0

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🚨 [security] [ruby] Update jwt 2.10.2 → 3.2.0 (major)#123

🚨 [security] [ruby] Update jwt 2.10.2 → 3.2.0 (major)#123
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depfu Bot commented May 18, 2026

What changed?

↗️ jwt (indirect, 2.10.2 → 3.2.0) · Repo · Changelog

🚨 ruby-jwt: Empty-key HMAC bypass; cross-language sibling of CVE-2026-44351

3.2.0

v3.2.0 (2026-05-13)

3.1.2

v3.1.2 (2025-06-28)

3.1.1

v3.1.1 (2025-06-24)

3.1.0

v3.1.0 (2025-06-23)

3.0.0

v3.0.0 (2025-06-14)

↗️ safety_net_attestation (indirect, 0.4.0 → 0.5.0) · Repo · Changelog

0.5.0 (from changelog)

Changed

↗️ webauthn (indirect, 3.4.1 → 3.4.3) · Repo · Changelog

3.4.3 (from changelog)

Fixed

3.4.2 (from changelog)

Added

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