CVE-2020-7695

MEDIUM EPSS 67.0%
Published Jul 27, 20205y ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Jul 27, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
67.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-74

Affected Products 1

VendorProductVersionRange
encodeuvicorn* <0.11.7

References 2

  • github.com https://github.com/encode/uvicorn
    Third Party Advisory
  • snyk.io https://snyk.io/vuln/SNYK-PYTHON-UVICORN-570471
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.