CVE-2023-38522

CVE-2023-38522: Apache Traffic Server: Incomplete field name check allows request smuggling

Vendor Apache Software Foundation
Product Apache Traffic Server
Weakness CWE-444
Published July 26, 2024
Last update November 3, 2025

CVSS base score

What the vulnerability does

Description

Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

Key dates

Disclosure timeline

July 26, 2024 CVE published
November 3, 2025 Record updated