Skip to content
Fencer Intel
medium 4.5

CVE-2025-26791 json

DOMPurify allows Cross-site Scripting (XSS)

published last yr. modified last mo. also EUVD-2025-4245 , GHSA-vhxf-7vqr-mrjg

cvss
4.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

DOMPurify before 3.2.4 has an incorrect template literal regular expression, sometimes leading to mutation cross-site scripting (mXSS).

Patch / fix

  • npm dompurify 3.2.4
  • Cure53 DOMPurify 3.2.4
  • node-dompurify Debian 14, Debian 13 3.1.7+dfsg+~3.0.5-2

debian advisories DEBIAN-CVE-2025-26791

  • ceph ceph storage 7.1 2:18.2.1-381.el8cp
  • ceph ceph storage 7.1 2:18.2.1-381.el9cp
  • cephadm ceph storage 7.1 2:18.2.1-381.el9cp
  • librbd1 ceph storage 7.1 2:18.2.1-381.el8cp
  • librbd1 ceph storage 7.1 2:18.2.1-381.el9cp
  • librgw2 ceph storage 7.1 2:18.2.1-381.el8cp
  • librgw2 ceph storage 7.1 2:18.2.1-381.el9cp
  • rbd-nbd ceph storage 7.1 2:18.2.1-381.el8cp

red hat advisories RHSA-2026:2769

  • argocd-cli openSUSE Tumbleweed 2.14.8-1.1

opensuse advisories openSUSE-SU-2025:14921-1

Is CVE-2025-26791 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2025-26791 updated cvss 4.5

dompurify: Mutation XSS in DOMPurify Due to Improper Template Literal Handling

  • Red Hat Cryostat 3 cryostat/cryostat-rhel9 Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-console-plugin-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-backstage-plugins-eventmesh-rhel8
    affected: no fix available
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8 Red Hat build of Apicurio Registry 2 io.apicurio-apicurio-registry
    affected: no fix planned “Will not fix”
  • Red Hat Ceph Storage 6 grafana Red Hat Ceph Storage 8 grafana Red Hat Ceph Storage 9 grafana
    affected: no fix available
  • Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 grafana, grafana-selinux Red Hat Enterprise Linux 10 grafana
    affected: no fix planned “Will not fix”
  • Red Hat Integration Camel K 1 io.apicurio-apicurio-registry Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel9
    affected: no fix available
show 14 more
  • Red Hat OpenShift Container Platform 4 openshift4/ose-console
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift Dev Spaces devspaces/code-rhel8 Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel8, openshift-gitops-1/argocd-rhel9, openshift-gitops-1/gitops-operator-bundle
    affected: no fix available
  • Red Hat OpenShift Virtualization 4 container-native-virtualization/kubevirt-console-plugin-rhel9 Red Hat streams for Apache Kafka com.github.streamshub-console
    affected: no fix available “Fix deferred”
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8 automation-gateway-server 2.5.20250312-1.el8ap Red Hat Ansible Automation Platform 2.5 for RHEL 9 automation-gateway-server 2.5.20250312-1.el9ap
    fixed: vendor fix RHSA-2025:2518
  • Red Hat Ceph Storage 7.1 Tools ceph 18.2.1-381.el8cp, ceph 18.2.1-381.el9cp, cephadm 18.2.1-381.el9cp, librbd1 18.2.1-381.el8cp, librbd1 18.2.1-381.el9cp, librgw2 18.2.1-381.el8cp, +37 more
    fixed: vendor fix RHSA-2026:2769
  • Red Hat Ceph Storage 8 rhceph 1770630607
    fixed: vendor fix RHSA-2026:2737
  • Red Hat Ceph Storage 9 rhceph 1771399331
    fixed: vendor fix RHSA-2026:3406
  • Red Hat Ceph Storage 9.2 rhceph/rhceph-9-rhel10 1790843527
    fixed: vendor fix RHSA-2026:86618
  • Red Hat Developer Hub 1.6 rhdh 1.6.0-1745956724
    fixed: vendor fix RHSA-2025:7626
  • Red Hat OpenShift AI 2.16 rhoai v2.16.2-1741963152
    fixed: vendor fix RHSA-2025:3368
  • Red Hat OpenShift AI 2.19 rhoai v2.19.0-1743595568
    fixed: vendor fix RHSA-2025:3886
  • Red Hat Openshift Network Observability 1.9.3 network-observability 1.9-1751010148
    fixed: vendor fix RHSA-2025:10020
  • Red Hat RHOSSM 2.5 for RHEL 8 openshift-service-mesh/kiali-ossmc-rhel8 1.73.18-2
    fixed: vendor fix RHSA-2025:1875
  • Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-rhel8-operator, advanced-cluster-security/rhacs-central-db-rhel8, advanced-cluster-security/rhacs-scanner-v4-rhel8, advanced-cluster-security/rhacs-scanner-v4-db-rhel8 Red Hat Ansible Automation Platform 2 automation-controller, automation-eda-controller Red Hat Ansible Automation Platform 2.5 for RHEL 8 receptor 1.5.3-2.el8ap, molecule 25.2.0-1.el8ap, receptorctl 1.5.3-2.el8ap, ansible-lint 25.1.2-1.el8ap, automation-hub 4.10.2-1.el8ap, ansible-creator 25.0.0-1.el8ap, +38 more Red Hat Ansible Automation Platform 2.5 for RHEL 9 receptor 1.5.3-2.el9ap, molecule 25.2.0-1.el9ap, receptorctl 1.5.3-2.el9ap, ansible-lint 25.1.2-1.el9ap, automation-hub 4.10.2-1.el9ap, ansible-creator 25.0.0-1.el9ap, +38 more Red Hat Ceph Storage 8 rhceph 1770630907, rhceph 1770631713, rhceph 1770631941, rhceph 1770632172, rhceph 1770632233 Red Hat Ceph Storage 9 rhceph 1771398877, rhceph 1771399022, rhceph 1771399060, rhceph 1771399158, rhceph 1771816028
    +4 more products
    Red Hat Ceph Storage 9.2 rhceph/alloy-rhel10 1790774976, rhceph/grafana-rhel10 1790774121, rhceph/keepalived-rhel10 1790842990, rhceph/oauth2-proxy-rhel10 1790774021, rhceph/snmp-notifier-rhel10 1790773439, rhceph/rhceph-haproxy-rhel10 1790846345 Red Hat Developer Hub 1.6 rhdh 1.6.0-1745956395, rhdh 1.6.0-1745970106 Red Hat OpenShift AI (RHOAI) rhoai/odh-codeflare-operator-rhel8 Red Hat OpenShift AI 2.16 rhoai v2.16.1-1742921168, rhoai v2.16.2-1741882429, rhoai v2.16.2-1742480582, rhoai v2.16.2-1742487039, rhoai v2.16.2-1742487199, rhoai v2.16.2-1742487225, +21 more
    not affected: vulnerable code not present

6 more not affected in the full advisory

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
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • ensy.zip https://ensy.zip/posts/dompurify-323-bypass/ referenced PoC, tagged "exploit" by a source, unverified
  • nsysean.github.io https://nsysean.github.io/posts/dompurify-323-bypass/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
GitHub 3.1 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm dompurify
<3.2.4
3.2.4

Affected products

  • Cure53 DOMPurify

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.

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