CVE-2026-68762

Ktor WebSocket Decompression Denial of Service Vulnerability

Published Aug 17, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title Ktor WebSocket Decompression Denial of Service Vulnerability
Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains ktor
Vendors & Products Jetbrains
Jetbrains ktor
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
JetBrains
Published
Updated
Aug 17, 2026, 4:17 PM
Reserved
Jul 31, 2026, 2:41 PM
Status
Awaiting Analysis
Published
Aug 17, 2026, 4:17 PM
Modified
Aug 28, 2026, 9:29 PM