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 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-9V7F-9G4P-FFGJ PyJWT: PyJWKClient follows redirects when fetching JWKS

Summary PyJWT 2.13.0 PyJWKClient followed HTTP redirects while fetching a JWKS, without validating the redirect destination. A configured trusted endpoint could therefore redirect the client to a different host. Impact When an application uses PyJWKClient with caller-supplied request headers and ...

PyJWT: PyJWKClient follows redirects when fetching JWKS

Summary PyJWT 2.13.0 PyJWKClient followed HTTP redirects while fetching a JWKS, without validating the redirect destination. A configured trusted endpoint could therefore redirect the client to a different host. Impact When an application uses PyJWKClient with caller-supplied request headers and ...

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 an encoded JWK such as an RSA public key is accepted as a valid HMAC secret without...

CVE-2026-91187 Improper Verification of Cryptographic Signature in dashbit nimble_zta Cloudflare strategy

Improper Verification of Cryptographic Signature vulnerability in dashbit nimblezta allows an unauthenticated remote attacker to authenticate as an arbitrary Cloudflare service token. Applications using the Cloudflare Zero Trust authentication strategy are affected. verifytoken/2 in...

EUVD-2026-85871

Improper Verification of Cryptographic Signature vulnerability in dashbit nimblezta allows an unauthenticated remote attacker to authenticate as an arbitrary Cloudflare service token. Applications using the Cloudflare Zero Trust authentication strategy are affected. verifytoken/2 in...

CVE-2026-78223 Token revocation record built from unverified JWT claims in AshAuthentication

Improper Verification of Cryptographic Signature vulnerability in team-alembic AshAuthentication allows a caller of the token revocation action to neutralise a revocation or write arbitrary rows into the token resource. AshAuthentication.TokenResource.RevokeTokenChange.change/3 reads the :token...

CVE-2026-91017 Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via Forged JWT Callback

The Robokassa payment gateway for Woocommerce WordPress plugin before 1.8.9 does not verify the authenticity of incoming payment notifications when its non-default deferred-payment feature is enabled, allowing unauthenticated attackers to forge a notification and mark arbitrary WooCommerce orders...

Exploit for Improper Authentication in Jfrog Artifactory

CVE‑2026‑82329 – JFrog Artifactory Auth B...

CVE-2026-19505

The RDK-B WebUI (version rdkb-2025q4-kirkstone) is vulnerable to an authentication bypass due to improper cryptographic signature verification in jst_functions.c. The root cause is the incorrect handling of the return value from OpenSSL's EVP_VerifyFinal() function, which treats both valid and in...

CVE-2026-19505: Improper Verification of Cryptographic Signature

Improper cryptographic signature verification in jstfunctions.c in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature...

CVE-2026-36727: Improper Authentication

An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token...

CVE-2026-36721: Improper Verification of Cryptographic Signature

A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token...

CVE-2026-44351: Improper Authentication

fast-jwt provides fast JSON Web Token JWT implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When the application's key resolver returns an...

CVE-2026-3224

Authentication bypass in the Microsoft Entra ID Azure AD authentication mode in Devolutions Server 2025.3.15.0 and earlier allows an unauthenticated user to authenticate as an arbitrary Entra ID user via a forged JSON Web Token JWT...

CVE-2025-55210

CVE-2025-55210 affects FreePBX PBX API (module api) prior to 17.0.5 and 16.0.17. The issue allows privilege escalation for authenticated users with REST/GraphQL API access by forging a valid JWT signed with the api-oauth.key private key and arbitrary scopes. The token will be accepted only if its...

CVE-2025-49151: Use of Hard-coded, Security-relevant Constants

The affected products could allow an unauthenticated attacker to generate forged JSON Web Tokens JWT to bypass authentication...

CVE-2024-47073: Improper Verification of Cryptographic Signature

DataEase is an open source data visualization analysis tool that helps users quickly analyze data and gain insights into business trends. In affected versions a the lack of signature verification of jwt tokens allows attackers to forge jwts which then allow access to any interface. The...

CVE-2024-46612: Use of Hard-coded Cryptographic Key

IceCMS v3.4.7 and before was discovered to contain a hardcoded JWT key, allowing an attacker to forge JWT authentication information...