Vulnerability in Perspective-Dev Perspective
CVE-2026-67198
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Perspective-Dev Perspective — versions 0
Weakness classification (CWE)
References
- christbowel.com/blog/perspective-5-0-0-five-cves/ (technical-description, exploit)
- www.vulncheck.com/advisories/perspective-dos-via-virtualserver-protocol-dispatc… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67198?
- CVE-2026-67198 is a high-severity vulnerability in Perspective-Dev Perspective, classified under CWE-616. CVSS score: 7.5/10. Published 2026-08-04.
- How severe is CVE-2026-67198?
- High severity. CVSS v3 base score is 7.5 out of 10.