Vulnerability Details CVE-2026-58189
Apache Traffic Server allows redirect-limit bypass when plugins reset the retry counter, enabling SSRF amplification.
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 30.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-58189
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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