CVE-2026-67198

HIGH 7.5

Perspective 5.0.0 DoS via VirtualServer Protocol Dispatcher

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-616
Vendor	perspective-dev
Product	perspective
Published	Aug 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

perspective-dev / perspective

0 ≤ 5.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

christbowel.com: https://christbowel.com/blog/perspective-5-0-0-five-cves/ vulncheck.com: https://www.vulncheck.com/advisories/perspective-dos-via-virtualserver-protocol-dispatcher

Credits

Christ Bowel Bouchuen