CVE-2026-33930

Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d	Vendor Advisory Mailing List

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:traffic_server::::::::
	cpe:2.3:a:apache:traffic_server::::::::
	cpe:2.3:a:apache:traffic_server::::::::

History

No history.

Information

Published : 2026-07-29 08:16

Updated : 2026-08-03 13:42

NVD link : CVE-2026-33930

Mitre link : CVE-2026-33930

CVE.ORG link : CVE-2026-33930

JSON object : View

Products Affected

apache

traffic_server

CWE

CWE-121

Stack-based Buffer Overflow

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