Linux Distros Unpatched Vulnerability : CVE-2026-62995

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

PT-2026-65869

Name of the Vulnerable Software and Affected Versions joserfc versions prior to 1.7.2 Description The library accepts JSON Web Tokens JWTs containing trailing padding ==, which does not conform to JSON Object Signing and Encryption JOSE specifications. This results in token malleability, where a...

joserfc: joserfc: Integrity bypass via forged HMAC-signed tokens

A flaw was found in the joserfc Python library. A remote attacker can exploit a vulnerability in the joserfc.jwt.decode function to forge HMAC-signed tokens. This occurs because the library accepts tokens signed with an empty or null verification key, allowing an attacker to bypass integrity...

Linux Distros Unpatched Vulnerability : CVE-2026-49852

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

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...

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...

UBUNTU-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

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...

EUVD-2026-45281

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: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

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-2026-2528 joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)

Summary joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None. HMACAlgorithm.sign and HMACAlgorithm.verify in src/joserfc/rfc7518/jwsalgs.py:62-70 feed whatever OctKey.getopkey... produced into hmac.new..., and...

PYSEC-2026-2530 joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization

RFC7797 b64=false JWS payloads bypass JWSRegistry payload-size limits during deserialization Summary Testing revealed that joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.maxpayloadlength. The normal JWS compact and flattened JSON paths reject payloads above...

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...

openSUSE 16 Security Update : python-joserfc (openSUSE-SU-2026:21263-1)

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21263-1 advisory. Changes in python-joserfc: - CVE-2026-49852: HS256/HS384/HS512 verify accepts empty/nil HMAC key bsc1270234 Tenable has extracted the preceding...

ROOT-APP-PYPI-CVE-2026-27932 CVE-2026-27932 in rootio-joserfc - Patched by Root

Root has patched CVE-2026-27932 in the rootio-joserfc package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-49852 CVE-2026-49852 in rootio-joserfc - Patched by Root

Root has patched CVE-2026-49852 in the rootio-joserfc package for Root:PyPI. Multiple fixed versions available...

python313-joserfc-1.7.2-2.1 on GA media (moderate)

python313-joserfc-1.7.2-2.1 on GA media Announcement ID: openSUSE-SU-2026:11183-1 Rating: moderate Cross-References: CVE-2026-49852 Affected Products: openSUSE Tumbleweed An update that solves one vulnerability can now be installed. Description: These are all security issues fixed in the...