No exploitation reportedFix available

CVE-2020-7608

Q: Is CVE-2020-7608 actively exploited?

Active exploitation of CVE-2020-7608 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-7608?

CVE-2020-7608 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

No exploitation reported by the sources we read.

Published2020-03-16
Fixed in18.1.1 · 15.0.1 · 13.1.2 · 5.0.1
WeaknessCWE-1321

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC

2020-03-1620:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-7608?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-7608?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Yargs yargs-parser

Branch	Affected	Fixed in	Source
18.1	≥ 16.0.0, < 18.1.1	18.1.1	NVD · OSV
15.0	≥ 14.0.0, < 15.0.1	15.0.1	NVD · OSV
13.1	≥ 6.0.0, < 13.1.2	13.1.2	NVD · OSV
5.0	< 5.0.1	5.0.1	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

nodejs-nodemonAlmaLinux:8all versions · fixed in 1.18.3-1.module_el8.3.0+2047+b07ac28e
nodejs-nodemonAlmaLinux:8all versions · fixed in 1.18.3-1.module_el8.3.0+2023+d2377ea3
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.3.0+2023+d2377ea3
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.4.0+2224+b07ac28e
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.4.0+2521+c668cc9f

Vendor advisories

CVE-2020-7608 Red Hat Product Security160 products fixed
nodejs-yargs-parser: prototype pollution vulnerability
RHSA-2021:3917 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat Quay v3.6.0 security, bug fix and enhancement update
RHSA-2021:2041 Red Hat Product Security3 products fixed
Red Hat Security Advisory: Red Hat OpenShift Container Storage 4.7.0 security, bug fix, and enhancement update
RHSA-2021:0548 Red Hat Product Security30 products fixed
Red Hat Security Advisory: nodejs:10 security update
RHSA-2021:0521 Red Hat Product Security48 products fixed
Red Hat Security Advisory: rh-nodejs10-nodejs security update
RHSA-2020:5499 Red Hat Product Security30 products fixed
Red Hat Security Advisory: nodejs:12 security and bug fix update

1 more advisory

Full record on NVD

Fix

Update Yargs yargs-parser to 18.1.1 · 15.0.1 · 13.1.2 · 5.0.1
Vendor fix Red Hat Product Security RHSA-2021:3917 · 1 productFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Vendor fix Red Hat Product Security RHSA-2021:2041 · 3 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258

Advisories and patches

snyk.ioPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.15.3read 2026-10-23
NVDCVSS 2.04.6read 2026-10-23
NVDweakness (CWE)CWE-1321read 2026-10-23
FIRST EPSSEPSS score0.5 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Published: 2020-03-16
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-7608?

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

Is CVE-2020-7608 actively exploited?

Active exploitation of CVE-2020-7608 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-7608?

CVE-2020-7608 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Running yargs-parser? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database