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CVE-2026-68762
Published:August 17, 2026
Updated:August 31, 2026
In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible
Affected Packages
https://github.com/ktorio/ktor.git (GITHUB):
Affected version(s) >=3.0.0 <3.4.1
Fix Suggestion:
Update to version 3.4.1
io.ktor:ktor-websockets (JAVA):
Affected version(s) >=1.0.0-rc <3.4.1
Fix Suggestion:
Update to version 3.4.1
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Loop with Unreachable Exit Condition ('Infinite Loop')
EPSS
Base Score:
0.29