Apache Traffic Server 9.2.x/10.x request smuggling via malformed chunks
CVE-2024-53868 Published on April 3, 2025
Apache Traffic Server: Malformed chunked message body allows request smuggling
Apache Traffic Server allows request smuggling if chunked messages are malformed.
This issue affects Apache Traffic Server: from 9.2.0 through 9.2.9, from 10.0.0 through 10.0.4.
Users are recommended to upgrade to version 9.2.10 or 10.0.5, which fixes the issue.
Vulnerability Analysis
CVE-2024-53868 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, a high 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-2024-53868 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2024-53868
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Affected Versions
Apache Software Foundation Apache Traffic Server:- Version 9.2.0, <= 9.2.9 is affected.
- Version 10.0.0, <= 10.0.4 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.