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Fencer Vulns
medium 5.3

CVE-2024-21501 json

sanitize-html Information Exposure vulnerability

published 2024-02-24 2 y ago modified 2026-09-10 1 mo ago also EUVD-2024-0719 , GHSA-rm97-x556-q36h

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

Versions of the package sanitize-html before 2.12.1 are vulnerable to Information Exposure when used on the backend and with the style attribute allowed, allowing enumeration of files in the system (including project dependencies). An attacker could exploit this vulnerability to gather details about the file system structure and dependencies of the targeted server.

Patch / fix

  • npm sanitize-html 2.12.1
  • n/a sanitize-html 2.12.1
  • apostrophecms sanitize-html 2.12.1
  • node-sanitize-html Debian 14, Debian 13 2.13.0+~2.11.0-1

debian advisories DEBIAN-CVE-2024-21501

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-2024-21501 updated cvss 5.3

sanitize-html: Information Exposure when used on the backend

  • Red Hat Developer Hub 1 rhdh/rhdh-hub-rhel9
    affected: no fix available
  • Red Hat OpenShift Dev Spaces devspaces/dashboard-rhel8
    affected: no fix planned “Will not fix”
  • Red Hat Quay 3 quay/quay-rhel8 Red Hat Satellite 6 nodejs-redhat-cloud-services-frontend-components
    affected: no fix available
  • Red Hat multicluster engine for Kubernetes 2.4 for RHEL 8 multicluster-engine/console-mce-rhel8 v2.4.5-25, multicluster-engine/multicluster-engine-console-mce-rhel8 v2.4.5-25
    fixed: vendor fix RHBA-2024:3555
  • Red Hat multicluster engine for Kubernetes 2.5 for RHEL 9 multicluster-engine/console-mce-rhel9 v2.5.2-6, multicluster-engine/multicluster-engine-console-mce-rhel9 v2.5.2-6
    fixed: vendor fix RHBA-2024:1775
  • Red Hat Advanced Cluster Management for Kubernetes 2.9 for RHEL 8 rhacm2/console-rhel8 v2.9.4-22
    fixed: vendor fix RHBA-2024:3593
  • Red Hat Advanced Cluster Management for Kubernetes 2.10 for RHEL 9 rhacm2/console-rhel9 v2.10.1-3
    fixed: vendor fix RHBA-2024:1793
  • Red Hat OpenShift Container Platform 4.15 openshift4/ose-monitoring-plugin-rhel8 v4.15.0-202404031310.p0.ge8f7503.assembly.stream.el8
    fixed: vendor fix RHSA-2024:1770
show 1 more
  • Red Hat multicluster engine for Kubernetes 2.4 for RHEL 8 multicluster-engine/hive-rhel8 v2.4.5-21, multicluster-engine/work-rhel8 v2.4.5-21, multicluster-engine/discovery-rhel8 v2.4.5-22, multicluster-engine/placement-rhel8 v2.4.5-21, multicluster-engine/cluster-api-rhel8 v2.4.5-19, multicluster-engine/must-gather-rhel8 v2.4.5-23, +34 more Red Hat multicluster engine for Kubernetes 2.5 for RHEL 8 multicluster-engine/hive-rhel8 v2.5.2-3, multicluster-engine/agent-service-rhel8 v2.5.2-4, multicluster-engine/assisted-installer-rhel8 v2.5.2-2, multicluster-engine/assisted-image-service-rhel8 v2.5.2-2, multicluster-engine/assisted-installer-agent-rhel8 v2.5.2-2, multicluster-engine/assisted-installer-reporter-rhel8 v2.5.2-2 Red Hat multicluster engine for Kubernetes 2.5 for RHEL 9 multicluster-engine/work-rhel9 v2.5.2-2, multicluster-engine/discovery-rhel9 v2.5.2-1, multicluster-engine/placement-rhel9 v2.5.2-2, multicluster-engine/cluster-api-rhel9 v2.5.2-1, multicluster-engine/must-gather-rhel9 v2.5.2-1, multicluster-engine/registration-rhel9 v2.5.2-2, +29 more Red Hat Advanced Cluster Management for Kubernetes 2.9 for RHEL 8 rhacm2/thanos-rhel8 v2.9.4-15, rhacm2/memcached-rhel8 v2.9.4-15, rhacm2/prometheus-rhel8 v2.9.4-15, rhacm2/acm-grafana-rhel8 v2.9.4-16, rhacm2/acm-operator-bundle v2.9.4-30, rhacm2/acm-search-v2-rhel8 v2.9.4-16, +37 more Red Hat Advanced Cluster Management for Kubernetes 2.10 for RHEL 9 rhacm2/thanos-rhel9 v2.10.1-1, rhacm2/memcached-rhel9 v2.10.1-1, rhacm2/prometheus-rhel9 v2.10.1-1, rhacm2/acm-grafana-rhel9 v2.10.1-1, rhacm2/acm-operator-bundle v2.10.1-5, rhacm2/acm-search-v2-rhel9 v2.10.1-2, +37 more Red Hat OpenShift Container Platform 3.11 openshift3/ose-console
    +2 more products
    Red Hat OpenShift Container Platform 4 openshift4/ose-console Red Hat OpenShift Container Platform 4.15 openshift4/ose-cli v4.15.0-202404030309.p0.g62c4d45.assembly.stream.el8, openshift4/ose-tests v4.15.0-202404030309.p0.gf4b2b24.assembly.stream.el8, openshift4/ose-console v4.15.0-202404030309.p0.geb9d956.assembly.stream.el8, openshift4/ose-deployer v4.15.0-202404030309.p0.g62c4d45.assembly.stream.el8, openshift4/ose-installer v4.15.0-202404030309.p0.gc4f2d7c.assembly.stream.el8, openshift4/ose-multus-cni v4.15.0-202404030309.p0.gc9b9d67.assembly.stream.el8, +63 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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • security.snyk.io https://security.snyk.io/vuln/SNYK-JS-SANITIZEHTML-6256334 referenced PoC, tagged "exploit" by a source, unverified
  • security.snyk.io https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-6276557 referenced PoC, tagged "exploit" by a source, unverified
  • gist.github.com https://gist.github.com/Slonser/8b4d061abe6ee1b2e10c7242987674cf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Affected packages

ecosystem package affected fixed in
npm sanitize-html
<2.12.1
2.12.1

Affected products

  • n/a sanitize-html
  • n/a org.webjars.npm:sanitize-html
  • apostrophecms sanitize-html

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-538 Insertion of Sensitive Information into Externally-Accessible File or Directory

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.