Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 stack-based overflow

Summaryinfo

A vulnerability has been found in Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 and classified as very critical. This impacts an unknown function. The manipulation leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2026-58158. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 and classified as very critical. This issue affects an unknown part. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack. 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.

It is possible to read the advisory at lists.apache.org. The identification of this vulnerability is CVE-2026-58158 since 06/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k 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/

CPE 2.3info

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