Vulnerability Details CVE-2026-58158
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 31.6%
CVSS Severity
CVSS v3 Score 5.9
Products affected by CVE-2026-58158
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cpe:2.3:a:apache:traffic_server:10.0.0
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cpe:2.3:a:apache:traffic_server:10.0.1
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cpe:2.3:a:apache:traffic_server:10.0.2
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cpe:2.3:a:apache:traffic_server:10.0.3
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cpe:2.3:a:apache:traffic_server:10.0.4
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cpe:2.3:a:apache:traffic_server:10.0.5
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cpe:2.3:a:apache:traffic_server:10.0.6
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cpe:2.3:a:apache:traffic_server:10.1.0
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cpe:2.3:a:apache:traffic_server:10.1.1
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cpe:2.3:a:apache:traffic_server:10.1.2
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cpe:2.3:a:apache:traffic_server:10.1.3
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cpe:2.3:a:apache:traffic_server:8.0.0
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cpe:2.3:a:apache:traffic_server:8.0.1
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cpe:2.3:a:apache:traffic_server:8.0.2
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cpe:2.3:a:apache:traffic_server:8.0.3
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cpe:2.3:a:apache:traffic_server:8.0.4
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cpe:2.3:a:apache:traffic_server:8.0.5
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cpe:2.3:a:apache:traffic_server:8.0.6
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cpe:2.3:a:apache:traffic_server:8.0.7
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cpe:2.3:a:apache:traffic_server:8.0.8
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cpe:2.3:a:apache:traffic_server:8.1.0
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cpe:2.3:a:apache:traffic_server:8.1.1
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cpe:2.3:a:apache:traffic_server:8.1.2
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cpe:2.3:a:apache:traffic_server:8.1.3
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cpe:2.3:a:apache:traffic_server:8.1.4
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cpe:2.3:a:apache:traffic_server:8.1.5
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cpe:2.3:a:apache:traffic_server:8.1.6
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cpe:2.3:a:apache:traffic_server:8.1.7
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cpe:2.3:a:apache:traffic_server:8.1.8
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cpe:2.3:a:apache:traffic_server:8.1.9