CVE-2026-65902
Fixed in a distro release EPSS <1%CVSS 6.1
DOMPurify before 3.4.7 (affected versions <= 3.4.5) passes direct references to the module-level DEFAULT_ALLOWED_TAGS and DEFAULT_ALLOWED_ATTR sets to the uponSanitizeElement and uponSanitizeAttribute hooks via data.allowedTags / data.allowedAttributes when sanitize is called without an explicit cfg.ALLOWED_TAGS / cfg.ALLOWED_ATTR array. A hook that mutates these fields permanently widens the default allow-lists for the lifetime of the DOMPurify instance, so all subsequent default-config sanitize calls inherit the widened defaults and attacker payloads using the poisoned tag/attribute name survive sanitization. removeAllHooks(), clearConfig(), and passing a fresh cfg do not recover the state; only constructing a new DOMPurify instance does.
Products: cure53 dompurify
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | dompurify | 3.4.7 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | airflow-2 | no fix |
| Chainguard | airflow-core-2 | no fix |
| Chainguard | gitlab-rails-ce-18.1 | no fix |
| Chainguard | gitlab-rails-ce-18.10 | no fix |
| Chainguard | gitlab-rails-ce-18.11 | 18.11.13-r0 |
| Chainguard | gitlab-rails-ce-18.5 | no fix |
| Chainguard | gitlab-rails-ce-18.6 | no fix |
| Chainguard | gitlab-rails-ce-18.7 | no fix |
| Chainguard | gitlab-rails-ce-18.8 | no fix |
| Chainguard | gitlab-rails-ce-18.9 | no fix |
| Chainguard | gitlab-rails-ce-19.0 | 19.0.10-r0 |
| Chainguard | gitlab-rails-ce-19.1 | 19.1.7-r6 |
| Chainguard | gitlab-rails-ce-fips-18.1 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.10 | 18.10.8-r8 |
| Chainguard | gitlab-rails-ce-fips-18.11 | 18.11.12-r2 |
| Chainguard | gitlab-rails-ce-fips-18.5 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.6 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.7 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.8 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.9 | 18.9.8-r8 |
| Chainguard | gitlab-rails-ce-fips-19.0 | 19.0.9-r3 |
| Chainguard | gitlab-rails-ce-fips-19.1 | 19.1.7-r7 |
| Chainguard | kibana-9.4 | 9.4.2-r6 |
| Chainguard | kibana-9.4-iamguarded | 9.4.2-r6 |
| Chainguard | langfuse-3-compat | 3.225.7-r6 |
| Chainguard | langfuse-3-worker | 3.191.0-r0 |
| Chainguard | langfuse-fips-3-worker | 3.192.0-r0 |
| Chainguard | librechat | 0.8.7-r1 |
| Chainguard | nextcloud-server-31 | no fix |
| Chainguard | nextcloud-server-32 | 32.0.12-r0 |
| Chainguard | nextcloud-server-33 | 33.0.6-r0 |
| Chainguard | nextcloud-server-34 | 34.0.1-r4 |
| Chainguard | wazuh-dashboard | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-alerting-dashboards-plugin | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-alerting-dashboards-plugin-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-anomaly-detection-dashboards-plugin | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-anomaly-detection-dashboards-plugin-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-maps | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-maps-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-notifications | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-notifications-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-reporting | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-reporting-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-visualizations | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-dashboards-visualizations-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-index-management-dashboards-plugin | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-index-management-dashboards-plugin-fips | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-plugins | 4.14.5-r7 |
| Chainguard | wazuh-dashboard-plugins-fips | 4.14.5-r7 |
| Debian 12 | node-dompurify | no fix |
| Debian 13 | node-dompurify | no fix |
| Debian 14 | node-dompurify | 3.4.12+dfsg-1 |
| Red Hat hummingbird 1 | grafana12.4 | 0:12.4.8-0.1.2.hum1 |
| Red Hat hummingbird 1 | grafana13.1 | 0:13.1.3-0.1.3.hum1 |
| Ubuntu 22.04 LTS | node-dompurify | no fix |
| Ubuntu 24.04 LTS | node-dompurify | no fix |
| Ubuntu 26.04 LTS | node-dompurify | no fix |
| Wolfi | langfuse-3-compat | 3.225.7-r6 |
| Wolfi | langfuse-3-worker | 3.191.0-r0 |
| Wolfi | nextcloud-server-32 | 32.0.12-r0 |
| Wolfi | nextcloud-server-33 | 33.0.6-r0 |