fastapi-code-generator creates FastAPI applications from OpenAPI files.
fastapi-code-generator creates FastAPI applications from OpenAPI files. Prior to 0.8.1, the generator inserts Operation.summary into a generated route-handler docstring as a triple-double-quoted string without escaping embedded triple quotes. An attacker-controlled or attacker-influenced operation summary can close the docstring and inject a valid Python expression statement into the handler body. Syntax-breaking input only causes generation to fail, but syntactically valid generated code executes with the server process's privileges when the affected route handler is called. This call-time route-handler docstring sink is distinct from the project's separate import-time route-path and additi
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Koxudaxi
- Product
- fastapi-code-generator
- CVSS v4.0
- 9.3 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Exploitation
- SSVC poc, automatable yes, impact total
- Fix
- available
- Weakness
- CWE-94, CWE-116
- Exposure class
- Developer platform
- NVD status
- Deferred
Why it ranks 62 (High)
- Public exploit code reported
- CVSS v4.0 9.3 critical
- SSVC: automatable
- SSVC: total technical impact
- Product class: developer platform
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-63470 on this site · NVD · CVE.org · Vulnpedia
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