CVE-2026-48818
CVE-2026-48818 · Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and earlier, StaticFiles on Windows is vulnerable to SSRF. An UNC path such as \\attacker.com\share can cause os.path.realpath to initiate an outbound SMB connection before the path is rejected, exposing the service account’s NTLMv2 credentials for offline cracking or relay even though the HTTP response is only a 404. The issue affects default follow_symlink=False deployments, including frameworks built on Starlette such as FastAPI; POSIX systems and follow_symlink=True are unaffected. The issue is fixed in 1.1.0.
CVSS 7.5 · Élevée · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system · python
Produits et versions concernés
starlette
- Versions du logiciel
- < 1.1.0: Concernée
Aucun correctif publié
starlette PyPI
- Versions du logiciel
- 0.1.0
- 0.1.1
- 0.1.10
- 0.1.11
- 0.1.12
- 0.1.13
- 0.1.14
- 0.1.15
- 0.1.16
- 0.1.17
- 0.1.2
- 0.1.3
- 0.1.4
- 0.1.5
- 0.1.6
- 0.1.7
- 0.1.8
- 0.1.9
- 0.10.0
- 0.10.1
- 0.10.2
- 0.10.3
- 0.10.4
- 0.10.5
- 0.10.6
- 0.10.7
- 0.11.0
- 0.11.1
- 0.11.2
- 0.11.3
- 0.11.4
- 0.12.0
- 0.12.0b1
- 0.12.0b2
- 0.12.0b3
- 0.12.1
- 0.12.10
- 0.12.11
- 0.12.12
- 0.12.13
- 0.12.2
- 0.12.3
- 0.12.4
- 0.12.5
- 0.12.6
- 0.12.7
- 0.12.8
- 0.12.9
- 0.13.0
- 0.13.1
- 0.13.2
- 0.13.3
- 0.13.4
- 0.13.5
- 0.13.6
- 0.13.7
- 0.13.8
- 0.14.0
- 0.14.1
- 0.14.2
- 0.15.0
- 0.16.0
- 0.17.0
- 0.17.1
- 0.18.0
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- 0.2.0
- 0.2.1
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- 0.2.3
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- 0.20.1
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- 0.20.4
- 0.21.0
- 0.22.0
- 0.23.0
- 0.23.1
- 0.24.0
- 0.25.0
- 0.26.0
- 0.26.0.post1
- 0.26.1
- 0.27.0
- 0.28.0
- 0.29.0
- 0.3.0
- 0.3.1
- 0.3.2
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- 0.3.4
- 0.3.5
- 0.3.6
- 0.3.7
- 0.30.0
- 0.31.0
- 0.31.1
- 0.32.0
- 0.32.0.post1
- 0.33.0
- 0.34.0
- 0.35.0
- 0.35.1
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- 0.36.1
- 0.36.2
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- 0.37.0
- 0.37.1
- 0.37.2
- 0.38.0
- 0.38.1
- 0.38.2
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- 0.38.5
- 0.38.6
- 0.39.0
- 0.39.1
- 0.39.2
- 0.4.0
- 0.4.1
- 0.4.2
- 0.40.0
- 0.41.0
- 0.41.1
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- 0.42.0
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- 0.45.0
- 0.45.1
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- 0.46.0
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- 0.47.0
- 0.47.1
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- 0.48.0
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- 0.49.1
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- 0.5.0
- 0.5.1
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- 0.5.5
- 0.50.0
- 0.51.0
- 0.52.0
- 0.52.1
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- 0.7.1
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- 0.9.0
- 0.9.1
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- 0.9.11
- 0.9.2
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- 0.9.5
- 0.9.6
- 0.9.7
- 0.9.8
- 0.9.9
- 1.0.0
- 1.0.0rc1
- 1.0.1
- Plages de versions concernées
- ECOSYSTEM: < 1.1.0
Mettez à jour vers 1.1.0
starlette Ubuntu:22.04:LTS
- Versions du logiciel
- 0.14.1-1
- 0.16.0-1
- 0.18.0-1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
starlette Ubuntu:24.04:LTS
- Versions du logiciel
- 0.30.0-1
- 0.31.1-1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
starlette Ubuntu:25.10
- Versions du logiciel
- 0.46.1-2
- 0.46.1-3
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
starlette Ubuntu:26.10
- Versions du logiciel
- 0.50.0-1
- 1.1.0-1
- 1.3.1-1
- 1.7.0-2
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
starlette Ubuntu:26.04:LTS
- Versions du logiciel
- 0.46.1-3
- 0.50.0-1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
Sources originales
- https://github.com/Kludex/starlette/security/advisories/GHSA-wqp7-x3pw-xc5r
- https://github.com/Kludex/starlette/pull/3287
- https://github.com/Kludex/starlette/commit/fd53168a7767b6b55ba5af787fd88f49e33cabc5
- https://github.com/Kludex/starlette/releases/tag/1.1.0
- https://github.com/pypa/advisory-database/tree/main/vulns/starlette/PYSEC-2026-2281.yaml
- https://access.redhat.com/security/cve/CVE-2026-48818
- https://bugzilla.redhat.com/show_bug.cgi?id=2490020
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48818.json
- https://access.redhat.com/errata/RHSA-2026:30089
- https://access.redhat.com/errata/RHSA-2026:30088
- https://access.redhat.com/errata/RHSA-2026:30087
- https://nvd.nist.gov/vuln/detail/CVE-2026-48818