VULNERABILITY INTELLIGENCE
CVE-2020-5207
CVSS score5.4 MEDIUM
EPSS probability0.76%
CISA KEVNot currently listed
Published2020-01-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Description
In Ktor before 1.3.0, request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle \n as a headers separator.
Weakness classification
- security-advisories@github.com: CWE-444
- nvd@nist.gov: CWE-444
Primary references
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory