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 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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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/

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-04 15:16

Updated : 2026-09-09 20:35

NVD link : CVE-2026-67199

Mitre link : CVE-2026-67199

CVE.ORG link : CVE-2026-67199

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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