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CVE-2020-7754

20
FAUCET Score

CVE-2020-7754 is a denial-of-service vulnerability affecting versions of the npm-user-validate package prior to 1.0.1. The flaw stems from an inefficient regular expression used for email validation, which can lead to exponentially longer processing times for specially crafted input strings starting with '@' characters. This vulnerability carries a CVSS v3.1 score of 7.5 (HIGH), indicating a network-exploitable attack with low complexity and high availability impact, but no confidentiality or integrity impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:npmjs:npm-user-validate:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.48%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0348 is in the 78th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (19)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: npm-user-validateFixed in: 1.0.1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:10-8030020210118191659.229f0a1c
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:12-8030020210129141730.229f0a1c
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:14-8030020210126165503.229f0a1c
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs14-nodejs-0:14.15.4-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs12-nodejs-0:12.20.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs12-nodejs-nodemon-0:2.0.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs14-nodejs-0:14.15.4-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs12-nodejs-0:12.20.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs12-nodejs-nodemon-0:2.0.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs14-nodejs-0:14.15.4-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs12-nodejs-0:12.20.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs12-nodejs-nodemon-0:2.0.3-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs10-nodejs-0:10.23.1-2.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: kibana
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: kibana

Vendor Advisories (2)

npmGHSA-pw54-mh39-w3hchigh

Regular expression denial of service in npm-user-validate

May 10, 2021
redhatCVE-2020-7754Moderate

nodejs-npm-user-validate: improper input validation when validating user emails leads to ReDoS

Oct 16, 2020

References

github.com / npm/npm-user-validate/commit/c8a87dac1a4cc6988b5418f30411a8669bef204e
PatchThird Party Advisory
github.com / npm/npm-user-validate/security/advisories/GHSA-xgh6-85xh-479p
Third Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1019353
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-NPMUSERVALIDATE-1019352
ExploitThird Party Advisory