HIGH 7.1 NVD
CVE-2026-67199
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 ex
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.
References
- https://christbowel.com/blog/perspective-5-0-0-five-cves/
- https://www.vulncheck.com/advisories/perspective-dos-via-loop-expression-evaluation
- https://christbowel.com/blog/perspective-5-0-0-five-cves/
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-04 via NVD.
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