CVE-2026-67198: Perspective-Dev Perspective

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Perspective 5.0.0 contains a denial-of-service vulnerability in the VirtualServer protocol dispatcher that allows unauthenticated remote attackers to crash the server process by sending malformed or incomplete protobuf messages. Attackers can send well-formed requests such as ViewToArrowReq with no viewport set or MakeTableReq with no data field to trigger unwrap() calls on None values at nine distinct sites, causing the process to abort with SIGABRT.

Affected products

• Perspective-Dev Perspective: up to and including 5.0.0

Published 2026-08-04. Last modified 2026-09-09.