CVE-2018-21030

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 73.0% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-10-31 14:52Z6 YR AGO

Last updated

2024-08-05 12:19Z2 YR AGO

Reserved

2019-10-31

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

a2abd91b3075e6bea86861e2730c612d2e725c1e310e0ee10c14d5540056a0d1

• github.comhttps://github.com/jupyter/notebook/pull/3341x_refsource_MISC
• github.comhttps://github.com/jupyter/notebook/releases/tag/5.5.0x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20201119 [SECURITY] [DLA 2432-1] jupyter-notebook security updatehttps://lists.debian.org/debian-lts-announce/2020/11/msg00033.htmlmailing-listx_refsource_MLIST