GHSA-WW5H-9M49-7XX4 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

Summary The fix for CVE-2026-34950 CVSS 9.1, released in v6.2.0 is incomplete. It adds key.trim to the PEM-detection path in src/crypto.js, but String.prototype.trim only strips characters classified as whitespace by the ECMAScript specification. The subsequent ^-anchored regex /^-----BEGIN?: RSA...

CVE-2026-107722

The fast-jwt library (versions 6.2.0 to 6.3.0 ) is vulnerable to RSA→HS256 algorithm confusion due to an incomplete patch of CVE-2026-34950. The root cause resides in src/crypto.js, where performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatcher remains start-anchored. This allows...

CVE-2026-107722 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...

EUVD-2026-95347

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...

CVE-2026-107722 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...

CVE-2026-107722 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...

CVE-2026-85394

A flaw was found in python-jose. A remote attacker who obtains the service's public key can exploit an algorithm confusion vulnerability when signature verification algorithms are not strictly restricted. By utilizing a specifically formatted public key as a shared secret key, the attacker can...

CVE-2026-78903-SWIFT-Kick-to-the-Creds

CVE-2026-78903 — SWIFT 자격 증명에 대한 킥 SWIFT API 게이트웨이 JWT 알고리즘 혼동 필드| 값 ---|--- 심각도| 9.1 치명적 공격 경로| 네트워크 영향받는 버전| 3.2.0 – 3.2.4 발견자| 𝕍𝕠𝕤𝕤🥷 설명 SWIFT API 게이트웨이의 치명적인 잘못된 구성으로 인해 공격자가 서버가 RS256을 기대하는 동안 HS256 알고리즘을 사용하여 JWT를 위조할 수 있습니다. 서버는 공개 RSA 키를 HMAC 비밀 키로 사용하여 토큰을 잘못 검증하므로, 공격자가 유효한 관리자 토큰을 위조할 수...

Exploit for CVE-2026-102268

CVE-2026-102268 — PyJWT Asymmetric-PEM Detection Bypass E...

PYSEC-2026-4150 PyJWT BOM Bypass

Affected Package - Package: PyJWT pyjwt on PyPI - Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt&source=gmail&ust=1781794518474000&sa=E - Affected version: 2.13.0 - Vulnerability class: Algorithm confusion / patch bypass --- Root Cause PyJWT 2.13.0 introduced a guard i...

PYSEC-2026-4151 PyJWT accepts public JWK containers as HMAC secrets

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

PyJWT accepts public JWK containers as HMAC secrets

SummaryPyJWT 2.13.0 contains an incomplete defense against algorithm confusion whenan application mixes symmetric and asymmetric algorithms in one verificationpath. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when itis wrapped in a JWKS object, nested in an array, or represente...

PyJWT BOM Bypass

Affected Package- Package: PyJWT pyjwt on PyPI- Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt=gmail=1781794518474000=E- Affected version: 2.13.0- Vulnerability class: Algorithm confusion / patch bypass--- Root CausePyJWT 2.13.0 introduced a guard in...

PT-2026-105895

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

PyJWT accepts public JWK containers as HMAC secrets

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

GHSA-W2CX-738M-MC7W PyJWT accepts public JWK containers as HMAC secrets

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

PyJWT BOM Bypass

Affected Package - Package: PyJWT pyjwt on PyPI - Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt&source=gmail&ust=1781794518474000&sa=E - Affected version: 2.13.0 - Vulnerability class: Algorithm confusion / patch bypass --- Root Cause PyJWT 2.13.0 introduced a guard i...

GHSA-R6X4-923Q-G947 PyJWT BOM Bypass

Affected Package - Package: PyJWT pyjwt on PyPI - Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt&source=gmail&ust=1781794518474000&sa=E - Affected version: 2.13.0 - Vulnerability class: Algorithm confusion / patch bypass --- Root Cause PyJWT 2.13.0 introduced a guard i...

Improper Verification of Cryptographic Signature

Overview PyJWT is a Python implementation of RFC 7519. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the preparekey method in jwt/algorithms.py, where a public JWK container such as a JWK Set with a kty member nested inside a JSON array o...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: python-jwt (UTSA-2026-054077)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-054077 advisory. PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the...