PT-2026-60964 · Apache · Apache Traffic Server

CVE-2026-59173

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Published

2026-07-17

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Updated

2026-08-26

CVSS v4.0

9.2

Critical

VectorAV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions Apache Traffic Server versions 9.0.0 through 9.1.13 Apache Traffic Server versions 10.0.0 through 10.1.2
Description An uncontrolled resource consumption issue exists in Apache Traffic Server. This flaw allows for a denial of service via stalled HTTP/2 flow-control conditions.
Recommendations Upgrade Apache Traffic Server versions 9.0.0 through 9.1.13 to version 9.1.14. Upgrade Apache Traffic Server versions 10.0.0 through 10.1.2 to version 10.1.3.

Exploit

Fix

DoS

Resource Exhaustion

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Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-59173
OESA-2026-3309
OESA-2026-3310
OESA-2026-3311

Affected Products

Apache Traffic Server