Home/CVE/In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible
CVE

CVE-2025-29904

In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible

In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible.

MEDIUM · CVSS 5.3 EPSS 2e-05
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
▤

Affected Products & Versions

1
jetbrains ktor< 3.1.1
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cve@jetbrains.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Mar 2025 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.jetbrains.com/privacy-security/issues-fixed/Issue Tracking
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