CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2020-7695
Medium (5.3) in encode uvicorn. EPSS 1.4% chance of exploitation in the next 30 days. Fixed in uvicorn 0.11.7.
Uvicorn before 0.11.7 is vulnerable to HTTP response splitting. CRLF sequences are not escaped in the value of HTTP headers. Attackers can exploit this to add arbitrary headers to HTTP responses, or even return an arbitrary response body, whenever crafted input is used to construct HTTP headers.
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- encode:uvicorn
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-f97h-2pfx-f59f | PyPI | uvicorn | <0.11.7 | 0.11.7 |
| PYSEC-2020-151 | PyPI | uvicorn | <0.11.7 | 0.11.7 |