CVE-2026-48523

PyJWT is a JSON Web Token implementation in Python. From 2.9.0 to 2.12.1, there is a verifier-side algorithm allow-list bypass when jwt.decode or jwt.decodecomplete are called with a PyJWK key. The token header alg is checked against the caller-supplied algorithms allow-list, but signature...

CVE-2026-48526

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the...

PT-2026-44398

Name of the Vulnerable Software and Affected Versions PyJWT versions prior to 2.13.0 Description PyJWT is a JSON Web Token implementation in Python. When the verifier decodes JSON Web Tokens while supporting both asymmetric and HMAC algorithms, the library fails to validate the use of JSON Web Ke...

JWCrypto: python-cryptography: python: JWCrypto: Memory exhaustion via crafted compressed JWE tokens

A flaw was found in JWCrypto, a Python library for JSON Web Key JWK, JSON Web Signature JWS, and JSON Web Encryption JWE specifications. An unauthenticated attacker can exploit this vulnerability by sending specially crafted JWE tokens that use ZIP compression. While the input token size is...

Server-Side Request Forgery (SSRF)

github.com/centrifugal/centrifug is vulnerable to Server-Side Request Forgery SSRF. The vulnerability is due to improper handling of dynamic JWKS endpoint template variables, which allows an unauthenticated attacker to craft a malicious JWT with manipulated iss or aud claims to force Centrifugo t...

SUSE CVE-2026-44699

LibJWT is a C JSON Web Token Library. From 3.0.0 to 3.3.2, libjwt accepts an RSA JWK that does not contain an alg parameter as the verification key for an HS256/HS384/HS512 token. In the OpenSSL backend, this causes HMAC verification to run with a zero-length key, so an attacker can forge a valid...

CVE-2026-44699 LibJWT: Algorithm confusion allows JWT forgery with RSA JWK as empty-key HMAC

LibJWT is a C JSON Web Token Library. From 3.0.0 to 3.3.2, libjwt accepts an RSA JWK that does not contain an alg parameter as the verification key for an HS256/HS384/HS512 token. In the OpenSSL backend, this causes HMAC verification to run with a zero-length key, so an attacker can forge a valid...

CVE-2026-44699

LibJWT is a C JSON Web Token Library. From 3.0.0 to 3.3.2, libjwt accepts an RSA JWK that does not contain an alg parameter as the verification key for an HS256/HS384/HS512 token. In the OpenSSL backend, this causes HMAC verification to run with a zero-length key, so an attacker can forge a valid...

Authentication Bypass

Unity Catalog is vulnerable to Authentication Bypass. The vulnerability is due to improper validation of the iss claim in JWT tokens, where the token exchange endpoint dynamically fetches JWKS data based on attacker-controlled issuer values without verifying trusted identity providers, allowing...

PT-2026-41315

Name of the Vulnerable Software and Affected Versions LibJWT versions 3.0.0 through 3.3.2 Description LibJWT accepts an RSA JSON Web Key JWK lacking an alg parameter as the verification key for HS256, HS384, or HS512 tokens. When using the OpenSSL backend, this results in HMAC verification...

CVE-2026-42576

apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as rsa.PublicKey without checking the key type. If a repository JWKS endpoint returns a non-RSA key e.g...

EUVD-2026-28934

apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as rsa.PublicKey without checking the key type. If a repository JWKS endpoint returns a non-RSA key e.g...

CVE-2026-42576

CVE-2026-42576 affects chainguard/apko. Before v1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as *rsa.PublicKey without key-type checks. If a repository JWKS endpoint returns a non-RSA key (e.g., EC), an unchecked type assertion panics, crashing apko ...

apko 代码问题漏洞

Apko is an open-source OCI image builder based on APK. Versions of Apko prior to 1.2.7 had code vulnerabilities. These vulnerabilities stemmed from DiscoverKeys’ unconditional assertion of JWKS key types as rsa.PublicKey without checking the key type. This could lead to panic and crashes due to...

Incorrect Type Conversion or Cast

Overview Affected versions of this package are vulnerable to Incorrect Type Conversion or Cast in the DiscoverKeys process. An attacker can cause the application to crash by providing a non-RSA key such as an EC key from a repository JWKS endpoint, which triggers a panic due to an unchecked type...

CVE-2026-40942 DSF: Inverted Time Comparison in OIDC JWKS and Token Cache

The Data Sharing Framework DSF implements a distributed process engine based on the BPMN 2.0 and FHIR R4 standards. Prior to 2.1.0, The OIDC JWKS and Metadata Document caches used an inverted time comparison isBefore instead of isAfter, causing the cache to never return cached values. Every...

OESA-2026-1926 python-jwcrypto security update

Implements JWK, JWS, JWE specifications with python-cryptography Security Fixes: JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to 1.5.7, an unauthenticated attacker can exhaust server memory by sending crafted JWE tokens with ZIP compression. The existing...

OESA-2026-1924 python-jwcrypto security update

Implements JWK, JWS, JWE specifications with python-cryptography Security Fixes: JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to 1.5.7, an unauthenticated attacker can exhaust server memory by sending crafted JWE tokens with ZIP compression. The existing...

OESA-2026-1923 python-jwcrypto security update

Implements JWK, JWS, JWE specifications with python-cryptography Security Fixes: JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to 1.5.7, an unauthenticated attacker can exhaust server memory by sending crafted JWE tokens with ZIP compression. The existing...

Always-Incorrect Control Flow Implementation

Overview Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation due to an inverted time comparison in the OIDC JWKS and token cache processes. An attacker can cause expired tokens to be reused or force repeated network requests to the OIDC provider by...