VDB
CVE-2026-54283
CVE-2026-54283
PUBLISHED
CVSS 7.5 HIGH
Reported by GitHub_M · Published June 22, 2026
Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts max_fields and max_part_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An unauthenticated attacker can therefore send a urlencoded body with an arbitrarily large number of fields or an arbitrarily large field, even when the application configured limits it believed would apply. This vulnerability is fixed in 1.3.1.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kludex | starlette | >= 0.4.1, < 1.3.1 |
| Kludex | starlette | >= 0.4.1, < 1.3.1, >= 0.4.1, < 1.3.1 |
| chainguard | tritonserver-backend-vllm-cuda-12.9 | 0, 0 |
| chainguard | semgrep | 0, 0, 0 |
| chainguard | airflow-postgres-fips-3 | 0, 0, 0 |
| chainguard | mlflow-fips | 0, 0, 0 |
| chainguard | airflow-core-3 | 0, 0, 0 |
| chainguard | litellm | 0, 0, 0 |
| wolfi | mlflow | 0, 0, 0 |
| chainguard | prefect | 0, 0, 0 |
| chainguard | mlflow | 0, 0, 0 |
| chainguard | tritonserver-backend-vllm-cuda-13.0 | 0, 0 |
| chainguard | airflow-3 | 0, 0, 0 |
| chainguard | nemo | 0, 0, 0 |
| wolfi | semgrep | 0, 0, 0 |
| wolfi | airflow-3 | 0, 0, 0 |
| chainguard | prefect-fips | 0, 0, 0 |
Timeline
- Jun 15, 2026 CVE Published
- Jun 23, 2026 Security Advisory
- Jun 23, 2026 CVE Updated
- Jul 25, 2026 EPSS Score
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
References
- https://github.com/Kludex/starlette/security/advisories/GHSA-82w8-qh3p-5jfq x_refsource_CONFIRM