JetBrains Ktor <3.1.1 HTTP Request Smuggling (CVE-2025-29904)
CVE-2025-29904 Published on March 12, 2025
In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible
Vulnerability Analysis
CVE-2025-29904 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is a HTTP Request Smuggling Vulnerability?
When malformed or abnormal HTTP requests are interpreted by one or more entities in the data flow between the user and the web server, such as a proxy or firewall, they can be interpreted inconsistently, allowing the attacker to "smuggle" a request to one device without the other device being aware of it.
CVE-2025-29904 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2025-29904
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Affected Versions
JetBrains Ktor:- Before 3.1.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.