Apache Traffic Server up to 9.2.14/10.1.3 input validation

Summaryinfo

A vulnerability was found in Apache Traffic Server up to 9.2.14/10.1.3. It has been classified as very critical. Impacted is an unknown function. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2026-33267. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Apache Traffic Server up to 9.2.14/10.1.3. It has been classified as very critical. This affects an unknown code block. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-33267 since 03/18/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 333156 (Fedora 44 : trafficserver (2026-5bec7441bb)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.2.15 or 10.1.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (333156), EUVD (EUVD-2026-50169) and CERT Bund (WID-SEC-2026-2561). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Apache Traffic Server

Productinfo

Vendor

• Apache

Name

• Traffic Server

Version

• 9.2.0
• 9.2.1
• 9.2.2
• 9.2.3
• 9.2.4
• 9.2.5
• 9.2.6
• 9.2.7
• 9.2.8
• 9.2.9
• 9.2.10
• 9.2.11
• 9.2.12
• 9.2.13
• 9.2.14
• 10.1.0
• 10.1.1
• 10.1.2
• 10.1.3

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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