CVE-2026-54283
Fixed in a distro release EPSS <1%CVSS 7.5
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.
Products: Kludex starlette
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | starlette | 1.3.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | airflow-3 | 3.2.2-r6 |
| Chainguard | airflow-core-3 | 3.2.2-r4 |
| Chainguard | airflow-postgres-fips-3 | 3.2.2-r2 |
| Chainguard | keep-api | no fix |
| Chainguard | keep-api-fips | no fix |
| Chainguard | kserve | 0.20.0-r7 |
| Chainguard | kserve-localmodel | 0.20.0-r7 |
| Chainguard | kserve-storage-controller | no fix |
| Chainguard | kserve-storage-controller | 0.20.0-r4 |
| Chainguard | litellm | 1.89.0-r3 |
| Chainguard | mlflow | 3.13.0-r1 |
| Chainguard | mlflow | 3.16.0-r0 |
| Chainguard | mlflow-fips | 3.13.0-r1 |
| Chainguard | mlrun-api | no fix |
| Chainguard | mlrun-api-fips | no fix |
| Chainguard | nemo | 2.7.3-r8 |
| Chainguard | opal | no fix |
| Chainguard | py3.11-prefect | 3.7.5-r0 |
| Chainguard | py3.11-prefect-fips | 3.7.5-r0 |
| Chainguard | py3.12-prefect | 3.7.5-r0 |
| Chainguard | py3.12-prefect-fips | 3.7.5-r0 |
| Chainguard | py3.13-prefect | 3.7.5-r0 |
| Chainguard | py3.13-prefect-fips | 3.7.5-r0 |
| Chainguard | py3.14-prefect | 3.7.5-r0 |
| Chainguard | semgrep | 1.167.0-r1 |
| Chainguard | tritonserver-backend-vllm-cuda-12.9 | 25.9.0_git20260617-r0 |
| Chainguard | tritonserver-backend-vllm-cuda-13.0 | 25.11-r9 |
| Debian 12 | starlette | 0.26.1-1+deb12u2 |
| Debian 13 | starlette | 0.46.1-3+deb13u3 |
| Debian 14 | starlette | 1.3.1-1 |
| SUSE Linux Enterprise Server 16.0 | python-starlette | 0.41.3-160000.4.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-starlette | 0.41.3-160000.4.1 |
| Ubuntu 22.04 LTS | starlette | no fix |
| Ubuntu 24.04 LTS | starlette | no fix |
| Ubuntu 25.10 | starlette | no fix |
| Ubuntu 26.04 LTS | starlette | no fix |
| Ubuntu 26.10 | starlette | no fix |
| Wolfi | airflow-3 | 3.2.2-r6 |
| Wolfi | kserve | 0.20.0-r7 |
| Wolfi | kserve-localmodel | 0.20.0-r7 |
| Wolfi | kserve-storage-controller | 0.20.0-r4 |
| Wolfi | kserve-storage-controller | no fix |
| Wolfi | mlflow | 3.13.0-r1 |
| Wolfi | mlflow | 3.16.0-r0 |
| Wolfi | semgrep | 1.167.0-r1 |
| openSUSE Leap 16.0 | python-starlette | 0.41.3-160000.4.1 |