What is CVE-2026-45554?

CVE-2026-45554 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under CWE-248. CVSS score: 5.3/10. Published 2026-06-02.

How severe is CVE-2026-45554?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Zauberzeug Nicegui

CVE-2026-45554

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to…

EPSS: 0.002 (39.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Zauberzeug Nicegui — versions < 3.12.0

Weakness classification (CWE)

CWE-248
CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-45554?: CVE-2026-45554 is a medium-severity vulnerability in Zauberzeug Nicegui, classified under CWE-248. CVSS score: 5.3/10. Published 2026-06-02.
How severe is CVE-2026-45554?: Medium severity. CVSS v3 base score is 5.3 out of 10.