What is CVE-2026-27932?

CVE-2026-27932 is a high-severity vulnerability in Authlib Joserfc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-03.

How severe is CVE-2026-27932?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Authlib Joserfc

CVE-2026-27932

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a…

EPSS: 0.004 (34.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Authlib Joserfc — versions <= 1.6.2
Hsiaoming Joserfc

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27932?: CVE-2026-27932 is a high-severity vulnerability in Authlib Joserfc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-03.
How severe is CVE-2026-27932?: High severity. CVSS v3 base score is 7.5 out of 10.