PT-2026-65766 · Apache · Apache Traffic Server

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CVE-2026-58189

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Published

2026-07-29

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Updated

2026-08-07

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 8.0.0 through 8.1.9 Apache Traffic Server versions 9.0.0 through 9.2.14 Apache Traffic Server versions 10.0.0 through 10.1.3
Description Apache Traffic Server allows a redirect-limit bypass when plugins reset the retry counter. This behavior enables Server-Side Request Forgery (SSRF) amplification, a technique where an attacker leverages the server to send a large number of requests to a target system.
Recommendations Upgrade versions 8.0.0 through 8.1.9 and 9.0.0 through 9.2.14 to version 9.2.15. Upgrade versions 10.0.0 through 10.1.3 to version 10.1.4.

Exploit

Fix

DoS

SSRF

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Weakness Enumeration

Related Identifiers

CVE-2026-58189
OESA-2026-3309
OESA-2026-3310
OESA-2026-3311

Affected Products

Apache Traffic Server