joserfc: joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) stan...
CVE-2026-102946 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-102946, released October 17, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.7.4, joserfc.jws.deserialize_json() accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verify_general_json() loop performs no iterations for the empty array and returns success because no signature check failed, allowing an attacker without a signing key to supply an arbitrary payload that relying applications may treat as authentic. The issue affects the General JSON Serialization path; compact JWS and JWT decoding, Flattened JSON serialization, and JWE JSON processing do not follow this vulnerable path. This issue is fixed in version 1.7.4.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| joserfc · Debian 14 | 1.7.4-1 | DEBIAN-CVE-2026-102946 | Oct 17, 2026 |
| python-joserfc · opensuse-leap 16.0 | 1.1.0-bp160.5.1 | OPENSUSE-SU-2026:22136-1 | Nov 7, 2026 |
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