CVE-2026-62995

A flaw was found in joserfc, a Python library for JSON Object Signing and Encryption JOSE standards. This vulnerability allows the library to accept JSON Web Tokens JWTs that include non-standard trailing padding. An attacker could exploit this to create malleable JWTs, potentially bypassing...

CVE-2026-62995 joserfc accepts JWT with padding, leading to JWT malleability

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. in versions 1.7.1 and prior, joserfc accepts JWTs with trailing padding == which are not conforming to the JOSE specifications. This leads to malleability of the JWTs when...

CVE-2026-62995

CVE-2026-62995 affects the Python library joserfc (versions ≤ 1.7.1). The issue: joserfc accepts JWTs with trailing padding (==), which is non-conforming to JOSE specs and enables JWT malleability when parsed by the library. Practical impact varies by deployment and could allow bypass of token re...

CVE-2026-62995

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. in versions 1.7.1 and prior, joserfc accepts JWTs with trailing padding == which are not conforming to the JOSE specifications. This leads to malleability of the JWTs when...

DEBIAN-CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign...

CVE-2026-49852

Summary: CVE-2026-49852 affects the Python library joserfc. Prior to version 1.6.8, joserfc.jwt.decode can accept attacker-forged HS256/HS384/HS512 tokens if the verification key is empty or None, enabling potential authentication bypass when the configured secret resolves to an empty string. The...

PYSEC-2026-2529 joserfc's PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)

Summary A resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library decrypts a JSON Web Encryption JWE token using Password-Based Encryption PBES2 algorithms, it reads the p2c PBES2 Count parameter directl...

Inadequate Encryption Strength

Overview Affected versions of this package are vulnerable to Inadequate Encryption Strength in the verify process. An attacker can gain unauthorized access and forge arbitrary claims by submitting tokens signed with an empty or null key, which are incorrectly accepted as valid signatures. This is...

PT-2026-55459

Name of the Vulnerable Software and Affected Versions joserfc versions 1.6.7 and earlier Description An authentication bypass exists when the verification key provided to joserfc.jwt.decode is an empty string or None. This occurs because the HMACAlgorithm.verify and HMACAlgorithm.sign functions...

CVE-2026-48990

A flaw was found in joserfc, a Python library for JSON Object Signing and Encryption JOSE. This vulnerability allows a remote attacker to cause resource exhaustion, leading to a Denial of Service DoS, by sending oversized JSON Web Signature JWS payloads. The library fails to apply size limits,...

UBUNTU-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...

SUSE CVE-2026-27932

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...

CVE-2026-27932

A flaw was found in joserfc, a Python library for JSON Object Signing and Encryption JOSE standards. An unauthenticated attacker can cause a Denial of Service DoS by exploiting a resource exhaustion vulnerability. This occurs when the library decrypts a JSON Web Encryption JWE token using...

CVE-2026-27932

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...

UBUNTU-CVE-2026-27932

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...

CVE-2026-27932 joserfc PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...

CVE-2026-27932 joserfc PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...

CVE-2026-27932 joserfc PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service DoS via CPU exhaustion. When the library...