Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 Prefetch Plugin input validation

Summaryinfo

A vulnerability marked as critical has been reported in Apache Traffic Server up to 8.1.9/9.2.14/10.1.3. This impacts an unknown function of the component Prefetch Plugin. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2026-58183. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Apache Traffic Server up to 8.1.9/9.2.14/10.1.3. This affects an unknown code of the component Prefetch Plugin. 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:

The Apache Traffic Server prefetch plugin can crash when processing attacker-influenced input. 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.

The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-58183 since 06/29/2026. 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 $0-$5k at the moment (estimation calculated on 07/29/2026).

Upgrading to version 9.2.15 or 10.1.4 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Traffic Server

Version

• 8.1.0
• 8.1.1
• 8.1.2
• 8.1.3
• 8.1.4
• 8.1.5
• 8.1.6
• 8.1.7
• 8.1.8
• 8.1.9
• 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/

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

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