python-pyjwt: PyJWT: Denial of Service via processing of crafted detached JWS tokens

A flaw was found in PyJWT. A remote attacker can exploit this by supplying an arbitrarily large Base64URL payload segment when verifying detached JSON Web Signature JWS tokens using the unencoded-payload option. This forces excessive CPU work and memory allocations, leading to a Denial of Service...

EUVD-2026-37805

joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization...

GHSA-JC38-X7X8-2XC8 PHP JWT Framework: JWSVerifier uses algorithm from unprotected header, enabling algorithm confusion attacks

Summary JWSVerifier::getAlgorithm in src/Library/Signature/JWSVerifier.php line 144 merges protected and unprotected headers using PHP's spread operator: php $completeHeader = ...$signature-getProtectedHeader, ...$signature-getHeader; In PHP, when spreading arrays with duplicate string keys, the...

CVE-2026-48990

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.maxpayloadlength, which can lead to resource exhaustion...

DEBIAN-CVE-2026-48990

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.maxpayloadlength, which can lead to resource exhaustion...

CVE-2026-48990 joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.maxpayloadlength, which can lead to resource exhaustion...

PT-2026-50551

Name of the Vulnerable Software and Affected Versions joserfc versions 1.3.4 through 1.6.5 Description joserfc is a Python library implementing JSON Object Signing and Encryption JOSE standards. The library fails to apply the JWSRegistry.max payload length limit when processing RFC7797 b64=false...

EUVD-2026-32919

PyJWT: Unauthenticated DoS via unbounded Base64URL decoding of unused payload segment in b64=false detached JWS...

PyJWT: Unauthenticated DoS via unbounded Base64URL decoding of unused payload segment in b64=false detached JWS

!NOTE Practical impact depends on whether request body-size limits are enforced upstream proxy/web-server/framework. Deployments with typical body-size caps ≤2 MB bound the amplifier significantly; deployments accepting larger token inputs are more exposed. When verifying detached JWS tokens usin...

CVE-2026-50634

A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption that accepted Content-Type or protected HTTP-header metadata came from a verified...

CVE-2026-50634

CVE-2026-50634 affects Apache CXF's JwsJsonContainerRequestFilter. The vulnerability allows CXF to process metadata that was not authenticated by the accepted signature, bypassing the assumption that Content-Type or protected HTTP-header metadata came from a verified signature. This can influence...

CVE-2026-50634 Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature entry

A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption that accepted Content-Type or protected HTTP-header metadata came from a verified...

ROOT-APP-NPM-CVE-2025-65945 CVE-2025-65945 in @rootio/jws - Patched by Root

Root has patched CVE-2025-65945 in the @rootio/jws package for Root:npm. Multiple fixed versions available...

ROOT-APP-NPM-CVE-2016-1000223 CVE-2016-1000223 in @rootio/jws - Patched by Root

Root has patched CVE-2016-1000223 in the @rootio/jws package for Root:npm. Multiple fixed versions available...

Exploit for CVE-2026-29000

Lab Demo CVE-2026-29000: pac4j-jwt Authentication Bypass Môi...

Linux Distros Unpatched Vulnerability : CVE-2026-48525

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - PyJWT is a JSON Web Token implementation in Python. From 2.8.0 to 2.12.1, when verifying detached JWS tokens using the unencoded-payload option b64: false, RFC...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the Base64URL decoding process. An attacker can cause excessive CPU and memory consumption by supplying an arbitrarily large payload segment when verifying detached JWS tokens wit...

PYSEC-0000-CVE-2026-48525

PyJWT is a JSON Web Token implementation in Python. From 2.8.0 to 2.12.1, when verifying detached JWS tokens using the unencoded-payload option "b64": false, RFC 7797, PyJWT performs Base64URL decoding of the compact-serialization payload segment before enforcing the detached-payload rules. For...

CVE-2026-48525

PyJWT is a JSON Web Token implementation in Python. From 2.8.0 to 2.12.1, when verifying detached JWS tokens using the unencoded-payload option "b64": false, RFC 7797, PyJWT performs Base64URL decoding of the compact-serialization payload segment before enforcing the detached-payload rules. For...

CVE-2026-48525

PyJWT is a JSON Web Token implementation in Python. From 2.8.0 to 2.12.1, when verifying detached JWS tokens using the unencoded-payload option "b64": false, RFC 7797, PyJWT performs Base64URL decoding of the compact-serialization payload segment before enforcing the detached-payload rules. For...