CVE-2026-119283
highjoserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/authlib/joserfc/commit/d6dc8df6c7609277e741069d3733e43996c1cd17 security-advisories@github.com
- https://github.com/authlib/joserfc/releases/tag/1.7.5 security-advisories@github.com
- https://github.com/authlib/joserfc/security/advisories/GHSA-jpxq-7h8p-2q76 security-advisories@github.com