Resource Exhaustion Affecting joserfc package, versions <1.7.5-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-JOSERFC-21885074
- published30 Oct 2026
- disclosed29 Oct 2026
Introduced: 29 Oct 2026
NewCVE-2026-119283 (opens in a new tab)How to fix?
Upgrade Debian:unstable joserfc to version 1.7.5-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream joserfc package and not the joserfc package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.