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FastAPI SSP is vulnerable to Cross-site Request Forgery (CSRF) through improper OAuth parameter validation

🗓️ 19 Dec 2025 06:30:27Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 8 Views

FastAPI SSP before 0.19.0 is CSRF vulnerable due to improper OAuth state validation in callback.

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19 Dec 2025 21:08Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.16.3
CVSS 46.9
EPSS0.00311
SSVC
8