CVEvulnerability

CVE-2026-119283

7.5 HIGH EPSS 0.23% Published 2026-10-29 Modified 2026-10-30 Official page ↗

Exploitation and prioritisation

EPSS
0.23% chance of exploitation in the next 30 days · in the top 86.2% of all CVEs (2026-11-03)
CISA SSVC: exploitation
poc
CISA SSVC: automatable
yes
CISA SSVC: technical impact
partial
EU Vulnerability Database
EUVD-2026-113392

Affected packages

EcosystemPackageVulnerableFixed inAdvisory
PyPIjoserfc< 1.7.51.7.5GHSA-jpxq-7h8p-2q76
Status
Deferred
Published
2026-10-29
Last modified
2026-10-30
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

Description

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.7.5, joserfc.jwe.decrypt_json() accepts a JWE General JSON Serialization recipients array without a count limit and calls decrypt_cek() for every entry. An unauthenticated attacker who can submit a JWE to an endpoint using an RSA key-management algorithm can choose the number of private-key decryption operations performed by one request. The verify_all_recipients option does not reduce this work because the affected loop processes every recipient before consulting that setting, allowing repeated requests to exhaust service CPU without affecting confidentiality or integrity. This issue is fixed in version 1.7.5.

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

Referenced by GitHub Advisory · alias (1)

  • GHSA-jpxq-7h8p-2q76 joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Decryption advisory · PyPI

References