CVE-2026-59173

Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions

Published Jul 18, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Uncontrolled Resource Consumption vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 through 10.1.2.

Users are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apache
Apache apache Traffic Server
Vendors & Products Apache
Apache apache Traffic Server
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 through 10.1.2. Users are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue.
Title Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions
Weaknesses CWE-400
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jul 20, 2026, 1:41 PM
Reserved
Jul 2, 2026, 5:22 PM
Status
Analyzed
Published
Jul 18, 2026, 1:17 PM
Modified
Oct 24, 2026, 8:10 PM