CVE-2023-38522 - CVE House
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Status published Unknown CVE-2023-38522

Apache Traffic Server: Incomplete field name check allows request smuggling

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Ben Kallus

References

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Affected Vendor

Apache Software Foundation

View all reports →

Affected Software

Apache Traffic Server
Vulnerable Versions:
8.0.0, 9.0.0

Timeline

Official Publish: July 26th, 2024
Last Modified: November 3rd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

CWE-444

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1565.002 Stored Data Manipulation
Impact
T1078 Valid Accounts
Defense Evasion