CVE-2026-24033

Analyzed Analyzed - Analysis Complete

HTTP Request Smuggling in Apache Traffic Server

Publication date: 2026-07-29

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

Description

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3, from 9.0.0 through 9.2.14. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-29

Last Modified

2026-08-05

Generated

2026-08-18

AI Q&A

2026-07-29

EPSS Evaluated

2026-08-17

NVD

CVE-2026-24033

EUVD

EUVD-2026-50170

Affected Vendors & Products

Vendor	Product	Version / Range
apache	traffic_server	From 10.0.0 (inc) to 10.1.4 (exc)
apache	traffic_server	From 9.0.0 (inc) to 9.2.15 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-444	The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Attack-Flow Graph

Executive Summary

This vulnerability is an Inconsistent Interpretation of HTTP Requests, also known as HTTP Request/Response Smuggling. It affects Apache Traffic Server versions between 10.0.0 to 10.1.3 and 9.0.0 to 9.2.14. The issue allows attackers to smuggle requests or responses, potentially bypassing security controls or accessing unauthorized data.

Detection Guidance

Detection of HTTP Request Smuggling vulnerabilities typically requires network traffic analysis. Use tools like Wireshark or tcpdump to capture and inspect HTTP requests for inconsistencies in request parsing between front-end and back-end servers. Check for malformed or ambiguous requests that may exploit differences in how servers interpret headers or chunked encoding.

Impact Analysis

This vulnerability can lead to unauthorized access to sensitive data, bypassing security controls, or manipulating responses. Attackers might exploit it to smuggle malicious requests through the server, potentially leading to data breaches or service disruptions.

Compliance Impact

This vulnerability could result in unauthorized data access or disclosure, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations using affected versions may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Upgrade Apache Traffic Server to version 9.2.15 or 10.1.4 or later to address the HTTP Request Smuggling vulnerability.

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