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Starlette / FastAPI ASGI Framework β€” Security Intelligence & Vulnerability Profile


ParameterTechnical Specification
Official NameStarlette / FastAPI ASGI Framework
Vendor / Projectkludex
Canonical IDkludex:starlette
Versioning Schemesemver
CPE Identifierscpe:2.3:a:encode:starlette:*:*:*:*:*:*:*:*
Overall PostureCRITICAL
Recommended Safe Release0.45.2

Documented CVEs

1 vulnerabilities cataloged in the Hermes intelligence repository.

CISA KEV Entries

1 flaws with confirmed active in-the-wild exploitation.

Weaponized Exploits

1 vulnerabilities with publicly available PoCs or weaponized exploit tooling.

Remediation Target

Recommended upgrade to 0.45.2 to neutralize known flaws.


Progression of Hermes Threat Score (HTS) posture and maximum EPSS probability over the last 30 days:

Current HTS Score

0 / 100

= Stable over 30d

Max EPSS (Exploitation)

36.3 %

β–² +36.3 % over 30d

CISA KEV Activity

1

Active in-the-wild exploitation

HTS Trend Curve (D-30 β†’ Today)2026-08-12 β†’ 2026-09-10
2026-09-02: KEV: CVE-2026-487102026-09-10: CVE: CVE-2026-48710

3. Vulnerability History & Version Applicability Matrix

Section titled β€œ3. Vulnerability History & Version Applicability Matrix”
CVECVSS ScoreEPSS ProbabilityCISA KEVAffected VersionsFixed InHermes Analysis
CVE-2026-487107.5 (HIGH)36.3%CISA KEV< v0.45.20.45.2Analysis β†’

Vulnerabilities impacting Starlette / FastAPI ASGI Framework are actively leveraged in real-world intrusion campaigns:


Are you operating Starlette / FastAPI ASGI Framework in your infrastructure? Inspect your running build to evaluate applicability, confidence score, and security deltas: