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CVE-2020-7767

19
FAUCET Score

CVE-2020-7767 describes a Regular Expression Denial of Service (ReDoS) vulnerability affecting all versions of the 'express-validators' package. This flaw allows an attacker to trigger a denial of service by submitting specially crafted invalid URLs during validation. The vulnerability has a CVSS score of 5.3 (Medium), indicating a low impact on availability and no impact on confidentiality or integrity, with no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:express-validators_project:express-validators:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 58th percentile among its peer group of 23,690 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

npmGHSA-cf2x-rqc8-grfqmedium

Regular expression deinal of service in express-validators

May 10, 2021

References

snyk.io / vuln/SNYK-JS-EXPRESSVALIDATORS-1017404
ExploitThird Party Advisory