JetBrainsCVE-2026-68762

JetBrains Ktor: denial of service

Medium5.9CVE-2026-68762 · Published Aug 17, 2026 · updated Aug 28, 2026

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible

JetBrains advisory

Affected versions

Package	Affected	Fixed in
Ktor Product	< 3.4.1	3.4.1

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-835

More JetBrains advisories

Date	Advisory	Severity	Fixed in
Aug 17	JetBrains PyCharm: code execution Medium4.4Aug 17 CVE-2026-750592026.2.1	Medium4.4	2026.2.1
Aug 17	JetBrains PyCharm: remote code execution High8.4Aug 17 CVE-2026-750602026.2.1	High8.4	2026.2.1
Aug 17	JetBrains YouTrack: denial of service High7.1Aug 17 CVE-2026-750502026.1.13901+1 more	High7.1	2026.1.13901+1 more
Aug 17	JetBrains YouTrack: missing authorization High8.1Aug 17 CVE-2026-750512026.2.17917	High8.1	2026.2.17917
Aug 17	JetBrains IntelliJ IDEA: command injection Low3.6Aug 17 CVE-2026-750522026.2.1	Low3.6	2026.2.1
Aug 17	JetBrains IntelliJ IDEA: server-side request forgery Medium5.4Aug 17 CVE-2026-750532026.2.1	Medium5.4	2026.2.1

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