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.
Metrics
Affected Vendors & Products
References
History
Tue, 07 Apr 2026 00:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Jupyterhub
Jupyterhub ltiauthenticator |
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| Vendors & Products |
Jupyterhub
Jupyterhub ltiauthenticator |
Mon, 06 Apr 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Fri, 03 Apr 2026 22:45:00 +0000
| Type | Values Removed | Values Added |
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| 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. | |
| Title | LTI JupyterHub Authenticator: Unbounded Memory Growth via Nonce Storage (Denial of Service) | |
| Weaknesses | CWE-401 CWE-770 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-03T22:04:10.519Z
Updated: 2026-04-06T18:59:04.966Z
Reserved: 2026-03-25T15:29:04.746Z
Link: CVE-2026-34052
Updated: 2026-04-06T18:58:56.743Z
Status : Awaiting Analysis
Published: 2026-04-03T23:17:03.777
Modified: 2026-04-07T13:20:55.200
Link: CVE-2026-34052
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