AUGUST 16, 2026
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Case File

CVE-2026-67199

MEDIUM · CVSS 6.5 EPSS 0.30%

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The vulnerability allows remote attackers to exploit Perspective 5.0.0 by submitting specially crafted expressions that create unbounded loops, leading to a denial of service condition. This results in the server's event loop being blocked indefinitely, causing it to become unresponsive to all connected clients. Organizations using this version of Perspective should prioritize patching to mitigate the risk of service disruption.

CVE
CVE-2026-67199
Severity
MEDIUM
CVSS
6.5
EPSS
0.30%

Original NVD Description

Perspective 5.0.0 contains a denial of service vulnerability that allows remote attackers to block the server event loop indefinitely by submitting a crafted expression containing unbounded for or while loop constructs in a TableMakeViewReq message. Attackers can embed an arbitrarily large iteration count in an expression column evaluated once per table row, causing the Tornado IOLoop to block without any iteration cap, deadline, or cancellation check, rendering the server unresponsive to all connected clients.