๐Ÿ” CVE Alert

CVE-2026-123318

MEDIUM 4.8
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th

In JetBrains Ktor before 3.6.1 hTTP request smuggling was possible in the CIO engine

CWE CWE-444
Vendor jetbrains
Product ktor
Published Nov 6, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Affected Versions

JetBrains / Ktor
0 < 3.6.1

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
jetbrains.com: https://www.jetbrains.com/privacy-security/issues-fixed/