CVE-2018-20834

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

3.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 87.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD analysis status

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

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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

2019-04-30 18:01Z7 YR AGO

Last updated

2024-08-05 12:12Z2 YR AGO

Reserved

2019-04-30

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base

Data version

5.1

Document digest

e0f7eb69527cbc67a8a56f46beac568007e53cca8cf072b26ffe6cf04c56658e

• hackerone.comhttps://hackerone.com/reports/344595x_refsource_MISC
• github.comhttps://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8x_refsource_MISC
• github.comhttps://github.com/npm/node-tar/compare/58a8d43...a5f7779x_refsource_MISC
• access.redhat.comRHSA-2019:1821https://access.redhat.com/errata/RHSA-2019:1821vendor-advisoryx_refsource_REDHAT
• nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2018-20834x_refsource_MISC
• github.comhttps://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395dx_refsource_MISC
• github.comhttps://github.com/npm/node-tar/commits/v2.2.2x_refsource_MISC