CVE-2020-8147

highpriority · track · 40EPSS 0.031 · 88 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.15% (88th) EPSS

CVSS 7.5 · high

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Flaw in input validation in npm package utils-extend version 1.0.8 and earlier may allow prototype pollution attack that may result in remote code execution or denial of service of applications using utils-extend.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-471USCWE-471USCWE-94US

affected products (5)

Products and version ranges known to be affected.

n/a utils-extend≤ Not Fixedenisa_euvdEU
n/a utils-extend≤ version 1.0.8 and earlierenisa_euvdEU
Node.js Foundation utils-extend≤ 1.0.8fstec_bduRU
utils-extend project utils-extend≤ 1.0.8nvdUScpe:2.3:a:utils-extend_project:utils-extend:*:*:*:*:*:*:*:*
npm utils-extend≥ 0.0.0osvUSpkg:npm/utils-extend

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-6pq3-928q-x6w6Prototype Pollution2020-09-03ghsa · osvUS
All versions of `utils-extend` are vulnerable to prototype pollution. The `extend` function does not restrict the modification of an Object's prototype, which may allow an attacker to add or modify an existing property that will exist on all objects. ## Recommendation No fix is currently available. Consider using an alternative package until a fix is made available.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2020-04-03modified 2026-06-17

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+25171 more

references (4)

External citations — patches, advisories, analysis.

https://hackerone.com/reports/801522 cnnvd
https://nvd.nist.gov/vuln/detail/CVE-2020-8147 cnnvd
https://hackerone.com/reports/801522 enisa_euvd
https://hackerone.com/reports/801522ExploitThird Party Advisorynvd

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