VULNERABILITY INTELLIGENCE
CVE-2026-67199
CVSS score6.5 MEDIUM
EPSS probability0.52%
CISA KEVNot currently listed
Published2026-08-04
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-770