01 Record

CVE-2020-7608

yargs-parser could be tricked into adding or modifying properties of Object.prototype using a "__proto__" payload.

UnratedPUBLISHEDCNA: snyk

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

yargs-parser could be tricked into adding or modifying properties of Object.prototype using a "__proto__" payload.

03 Exploitation and scoring

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: 0.51% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 43.5% 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:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Low. 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.

04 Metadata

Published

2020-03-16 19:49Z6 YR AGO

Last updated

2024-08-04 09:33Z2 YR AGO

Reserved

2020-01-21

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant
CWE-267Privilege Defined With Unsafe ActionsBase

Data version

5.1

Document digest

12fc21b1d7ce3036aaa51ccebd7e2134f2c73b067b5b6bd6a1e050f5dced54fa

05 Affected products

VendorProductVersionsPlatforms

n/ayargs-parserAll versions prior to version 18.1.1 and patches at 13.1.2 and 15.0.1—

06 References

snyk.iohttps://snyk.io/vuln/SNYK-JS-YARGSPARSER-560381x_refsource_MISC

07 Fixed in

AlmaLinux 8

nodejs-nodemon
Fixed

A version is affected if any line below covers it.
- Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
- Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
nodejs-packaging
Fixed

A version is affected if any line below covers it.
- Affected before 17-3.module_el8.3.0+2023+d2377ea3
- Affected before 17-3.module_el8.4.0+2224+b07ac28e
- Affected before 17-3.module_el8.4.0+2521+c668cc9f

CloudLinux 8

nodejs-nodemon
Fixed

A version is affected if any line below covers it.
- Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
- Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
nodejs-packaging
Fixed

A version is affected if any line below covers it.
- Affected before 17-3.module_el8.3.0+2023+d2377ea3
- Affected before 17-3.module_el8.4.0+2224+b07ac28e
- Affected before 17-3.module_el8.4.0+2521+c668cc9f

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Debian 12

node-yargs-parser
Fixed in 18.1.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

node-yargs-parser
Fixed in 18.1.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

node-yargs-parser
Fixed in 18.1.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

node-yargs-parser
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.