Security Advisory

CVE-2026-34052

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-03 22:04:10

Last updated 2026-04-06 18:59:04

Assigner GitHub_M

State PUBLISHED

Description

LTI JupyterHub Authenticator is a JupyterHub authenticator for LTI. Prior to version 1.6.3, the LTI 1.1 validator stores OAuth nonces in a class-level dictionary that grows without bounds. Nonces are added before signature validation, so an attacker with knowledge of a valid consumer key can send repeated requests with unique nonces to gradually exhaust server memory, causing a denial of service. This issue has been patched in version 1.6.3.

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