StackPrism

PyPI package

starlette 0.47.2 vulnerabilities, and the version that fixes all of them

starlette 0.47.2 has 6 known vulnerabilities (4 rated high or critical); 1.3.1 fixes all of them. CISA lists 1 of them as exploited in the wild.

PyPI (opens in a new tab) describes it as “The little ASGI library that shines.”

Known vulnerabilities
6
4 rated high or critical
Released
Jul 20, 2025
Latest is 1.8.0
Licence
BSD-3-Clause
OpenSSF Scorecard
7.2/10
encode/starlette (opens in a new tab)
Pulls in
3 packages
Resolved by deps.dev

What to upgrade to

1.3.1 is the closest release with no known vulnerabilities.

  • 0.47.3

    Newest 0.47.x release. Released Aug 24, 2025.

    6 known vulnerabilities, worst rated warning

  • 1.3.1Upgrade to this

    Fixes all 6 known vulnerabilities. Released Jun 12, 2026.

    No known vulnerabilities

  • 1.8.0

    Latest release. Released Oct 13, 2026.

    No known vulnerabilities

1.3.1 came out on Jun 12, 2026. A coding agent trained before then doesn’t know it exists, so it may suggest an older release. AI knowledge cutoff dates

Hand the fix to your coding agent

One task with the upgrade, the file to change and why. Paste it into Claude Code, Cursor or Codex.

Findings

Every advisory for starlette 0.47.2

Known exploited first (CISA KEV), then by how likely they are to be exploited (FIRST EPSS), then by severity. Each id links to its OSV.dev record.

  1. CriticalCVE-2026-48710 on OSV.dev (opens in a new tab)GHSA-86qp-5c8j-p5mrExploited in the wild (CISA)EPSS: top 6%

    Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

    Fixed in 1.0.1. Published Jun 4, 2026.

  2. CriticalCVE-2025-62727 on OSV.dev (opens in a new tab)GHSA-7f5h-v6xp-fcq8EPSS: top 45%

    Starlette vulnerable to O(n^2) DoS via Range header merging in ``starlette.responses.FileResponse``

    Fixed in 0.49.1. Published Oct 28, 2025.

  3. CriticalCVE-2026-48818 on OSV.dev (opens in a new tab)GHSA-wqp7-x3pw-xc5rEPSS: top 51%

    Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows

    Fixed in 1.1.0. Published Jun 15, 2026.

  4. CriticalCVE-2026-54283 on OSV.dev (opens in a new tab)GHSA-82w8-qh3p-5jfqEPSS: top 60%

    Starlette: request.form() limits silently ignored for application/x-www-form-urlencoded enable DoS

    Fixed in 1.3.1. Published Jun 15, 2026.

  5. WarningCVE-2026-48817 on OSV.dev (opens in a new tab)GHSA-x746-7m8f-x49cEPSS: top 74%

    Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`

    Fixed in 1.1.0. Published Jun 15, 2026.

  6. LowCVE-2026-54282 on OSV.dev (opens in a new tab)GHSA-jp82-jpqv-5vv3EPSS: top 82%

    Starlette: Unvalidated request path concatenated into authority poisons request.url.hostname

    Fixed in 1.3.0. Published Jun 15, 2026.

Is starlette the only one?

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How this page is checked

StackPrism asks OSV.dev which advisories affect exactly starlette 0.47.2, merges duplicates filed under several ids, and ranks them with CISA’s Known Exploited Vulnerabilities list and FIRST EPSS. Release dates and deprecation come from deps.dev and PyPI. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against PyPI, OSV.dev, deps.dev, CISA KEV and FIRST EPSS.