CVE-2026-68762: CWE-835 in JetBrains Ktor
A denial of service (DoS) vulnerability exists in JetBrains Ktor versions before 3.4.1, related to WebSocket decompression. This issue is identified as CWE-835 and could allow an attacker to cause service disruption by exploiting the decompression mechanism.
AI Analysis
Technical Summary
CVE-2026-68762 describes a potential denial of service vulnerability in JetBrains Ktor prior to version 3.4.1. The vulnerability arises from improper handling of WebSocket decompression, classified under CWE-835 (Loop with Unreachable Exit Condition). This flaw could be exploited remotely without authentication to cause application unavailability by triggering resource exhaustion during decompression processing.
Potential Impact
The vulnerability impacts availability by enabling denial of service attacks through WebSocket decompression. There is no impact on confidentiality or integrity. The CVSS v3.1 score is 5.9 (medium severity), reflecting the network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch link is provided, users should monitor JetBrains advisories for updates and consider temporary mitigations such as disabling WebSocket compression if feasible until a fix is released.
CVE-2026-68762: CWE-835 in JetBrains Ktor
Description
A denial of service (DoS) vulnerability exists in JetBrains Ktor versions before 3.4.1, related to WebSocket decompression. This issue is identified as CWE-835 and could allow an attacker to cause service disruption by exploiting the decompression mechanism.
CVSS v3.1
Score 5.9medium
Affected software
pkg:maven/io.ktor/ktor-server-websocketsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-68762 describes a potential denial of service vulnerability in JetBrains Ktor prior to version 3.4.1. The vulnerability arises from improper handling of WebSocket decompression, classified under CWE-835 (Loop with Unreachable Exit Condition). This flaw could be exploited remotely without authentication to cause application unavailability by triggering resource exhaustion during decompression processing.
Potential Impact
The vulnerability impacts availability by enabling denial of service attacks through WebSocket decompression. There is no impact on confidentiality or integrity. The CVSS v3.1 score is 5.9 (medium severity), reflecting the network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch link is provided, users should monitor JetBrains advisories for updates and consider temporary mitigations such as disabling WebSocket compression if feasible until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-07-31T14:41:25.064Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a833690bf8831d53930a426
Added to database: 08/17/2026, 16:28:00 UTC
Last enriched: 08/17/2026, 16:43:07 UTC
Last updated: 08/17/2026, 23:09:52 UTC
Views: 5
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