Medium6.3Apache Software Foundation

Medium [CVE-2026-58156] Apache Traffic Server mis-parses ports in URLs and userinfo, allowing port-based access-control bypass

This medium-severity Apache Software Foundation advisory covers CVE-2026-58156 affecting Apache Traffic Server.

CVE-2026-58156 Published Jul 29, 2026Updated by vendor Aug 3, 2026

CVE-2026-58156

Affected products & platforms

Apache Software FoundationInfra & Gateways

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Summary

Apache Traffic Server mis-parses ports in URLs and userinfo, allowing port-based access-control bypass.

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.

Affected versions

8.0.0 through 8.1.9
9.0.0 through 9.2.14
10.0.0 through 10.1.3.
through 10.1.3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

9.2.15
10.1.4

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed for the summary, affected/fixed versions and remediation guidance it provides.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-58156 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-58156NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
Official documentation
Official ASF download tree — fetch the fixed release named in this advisory from the project's directory.

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