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Fencer Intel
medium 5.3

CVE-2021-29060 json

Regular Expression Denial of Service (ReDOS)

published 5y ago modified 4mo ago also GHSA-257v-vj4p-3w2h , EUVD-2021-1238

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Color-String version 1.5.5 and below which occurs when the application is provided and checks a crafted invalid HWB string.

Patch / fix

  • npm color-string 1.5.5
  • color-string_project color-string 1.5.5
  • node-color-string Debian 14, Debian 13, Debian 12 1.5.4-2

debian advisories DEBIAN-CVE-2021-29060

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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-2021-29060 updated cvss 5.3

nodejs-color-string: Regular expression denial of service when the application is provided and checks a crafted invalid HWB string

  • Red Hat OpenShift Service Mesh 1 servicemesh-grafana, servicemesh-prometheus, servicemesh-grafana-prometheus
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift Service Mesh 2.0 servicemesh-grafana, servicemesh-prometheus, servicemesh-grafana-prometheus
    affected: no fix available
  • Red Hat OpenShift Container Platform 3.11 kibana
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 kibana, openshift4/ose-grafana, openshift4/ose-thanos-rhel9, openshift4/ose-logging-kibana6, openshift4/ose-prometheus-rhel9
    affected: no fix available, no fix planned “Out of support scope”
  • Red Hat Quay 3 quay/quay-rhel8 Red Hat Virtualization 4 ovirt-web-ui, ovirt-engine-ui-extensions
    affected: no fix planned “Will not fix”
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel8, rhacm2/search-ui-rhel8, rhacm2/console-ui-rhel8
    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

3.13% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/yetingli/PoCs/blob/main/CVE-2021-29060/Color-String.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Affected packages

ecosystem package affected fixed in
npm color-string
<1.5.5
1.5.5

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel 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.