CVE-2026-123318

EUVD-2026-118082
In JetBrains Ktor before 3.6.1 hTTP request smuggling was possible in the CIO engine
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
JetBrainsCNA
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
jetbrainsktor
𝑥
< 3.6.1
CNA
Common Weakness Enumeration
References
https://www.jetbrains.com/privacy-security/issues-fixed/