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Fencer Vulns
medium 5.3

CVE-2021-3765 json

Inefficient Regular Expression Complexity in validatorjs/validator.js

published 2021-11-02 5 y ago modified 2026-06-17 4 mo ago also GHSA-qgmg-gppg-76g5 , EUVD-2021-2382

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

validator.js is vulnerable to Inefficient Regular Expression Complexity

Patch / fix

  • npm validator 13.7.0
  • validatorjs validatorjs/validator.js 13.7.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3765 updated cvss 7.5

validator: Inefficient Regular Expression Complexity in Validator.js

  • Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-ui-rhel8
    affected: no fix available “Fix deferred”
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/grc-ui-rhel8
    affected: no fix planned “Will not fix”
  • Red Hat Decision Manager 7 validator
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 openshift4/ose-console
    affected: no fix planned “Will not fix”
  • Red Hat Openshift Container Storage 4 ocs4/mcg-core-rhel8
    affected: no fix available
  • Red Hat Openshift Data Foundation 4 noobaa-core-container, odf4/odf-console-rhel9, odf4/odf-multicluster-console-rhel8
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Process Automation 7 validator
    affected: no fix planned “Out of support scope”
  • Red Hat RHODF 4.12 for RHEL 8 odf4/mcg-core-rhel8 v4.12.10-2
    fixed: vendor fix RHSA-2023:7820
show 2 more
  • Red Hat RHODF 4.13 for RHEL 9 odf4/mcg-core-rhel9 v4.13.0-41
    fixed: vendor fix RHSA-2023:3742
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel8 Red Hat Enterprise Linux 8 pcs, pcs-snmp Red Hat RHODF 4.12 for RHEL 8 odf4/cephcsi-rhel8 v4.12.10-1, odf4/odf-console-rhel8 v4.12.10-1, odf4/mcg-rhel8-operator v4.12.10-1, odf4/ocs-rhel8-operator v4.12.10-1, odf4/odf-rhel8-operator v4.12.10-1, odf4/odr-rhel8-operator v4.12.10-1, +16 more Red Hat RHODF 4.13 for RHEL 9 odf4/cephcsi-rhel9 v4.13.0-35, odf4/mcg-cli-rhel9 v4.13.0-17, odf4/odf-console-rhel9 v4.13.0-85, odf4/mcg-rhel9-operator v4.13.0-41, odf4/ocs-rhel9-operator v4.13.0-67, odf4/odf-rhel9-operator v4.13.0-24, +17 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/c37e975c-21a3-4c5f-9b57-04d63b28cfc9 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
npm validator
<13.7.0
13.7.0

Affected products

  • validatorjs validatorjs/validator.js

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.