CVE-2026-34052
| Summary |
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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| Publication Date |
April 4, 2026, 8:17 a.m. |
| Registration Date |
April 15, 2026, 11:25 a.m. |
| Last Update |
April 14, 2026, 2:44 a.m. |
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CVSS3.1 : MEDIUM
|
| スコア |
5.9
|
| Vector |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
高 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
なし |
| 可用性への影響(A) |
高 |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:jupyter:lti_jupyterhub_authenticator:*:*:*:*:*:*:*:* |
|
|
|
1.6.3 |
Related information, measures and tools
Common Vulnerabilities List