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Status published
Medium
CVE-2020-5207
Request smuggling is possible in Ktor when both chunked TE and content length specified
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
Affected Vendor
Ktor.io
View all reports →Affected Software
Ktor
Vulnerable Versions:
< 1.3.0
Timeline
Official Publish:
January 27th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N