CVE-2026-33228
flatted: Flatted: Prototype pollution vulnerability allows arbitrary code execution via crafted JSON.
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, Red Hat. Más baja según GHSA (alta).
Descripción
flatted is a circular JSON parser. Prior to version 3.4.2, the parse() function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key "__proto__" returns Array.prototype via the inherited getter. This object is then treated as a legitimate parsed value and assigned as a property of the output object, effectively leaking a live reference to Array.prototype to the consumer. Any code that subsequently writes to that property will pollute the global prototype. This issue has been patched in version 3.4.2.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| Red Hat | org.keycloak-keycloak-parent | sin corrección indicada |
| chainguard | arangodb-3.11, arangodb-3.12, authentik-2026.2 y 31 más | 3.11.14.3-r4 y 32 más |
| debian 11 | node-flatted | sin corrección indicada |
| debian 12 | node-flatted | sin corrección indicada |
| debian 13 | node-flatted | 3.2.7~ds-1+deb13u1 |
| debian 14 | node-flatted | 3.4.2~ds-1 |
| echo | node-flatted | 3.2.7~ds-1+deb13u1 |
| minimos | argo-workflows-3.7, argo-workflows-fips-3.7, nginx-proxy-manager-2 y 1 más | 3.7.12-r0 y 2 más |
| npm::GitHub Security Advisory npm | flatted | 3.4.2 |
| rapidfort debian 12 | node-flatted | 0:3.2.7~ds-1+deb13u1 |
| rapidfort debian 13 | node-flatted | 0:3.2.7~ds-1+deb13u1 |
| wolfi | eslint, kubeflow-katib, langfuse-3 y 4 más | 10.1.0-r0 y 6 más |
Mostrar las 54 entradas de 12 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| Red Hat | org.keycloak-keycloak-parent | sin corrección indicada |
| chainguard | arangodb-3.11 | 3.11.14.3-r4 |
| chainguard | arangodb-3.12 | 3.12.9.4-r5 |
| chainguard | authentik-2026.2 | 2026.2.4-r10 |
| chainguard | authentik-fips-2026.2 | 2026.2.4-r9 |
| chainguard | drupal-11.3 | 11.3.13-r3 |
| chainguard | eslint | 10.1.0-r0 |
| chainguard | gitlab-rails-ce-18.1 | 18.1.6-r27 |
| chainguard | gitlab-rails-ce-18.11 | 18.11.6-r11 |
| chainguard | gitlab-rails-ce-19.0 | 19.0.5-r12 |
| chainguard | gitlab-rails-ce-19.1 | 19.1.7-r6 |
| chainguard | gitlab-rails-ce-19.2 | 19.2.5-r2 |
| chainguard | gitlab-rails-ce-19.3 | 19.3.1-r6 |
| chainguard | gitlab-rails-ce-fips-18.1 | 18.1.6-r89 |
| chainguard | gitlab-rails-ce-fips-18.10 | 18.10.8-r8 |
| chainguard | gitlab-rails-ce-fips-18.11 | 18.11.7-r3 |
| chainguard | gitlab-rails-ce-fips-18.9 | 18.9.8-r8 |
| chainguard | gitlab-rails-ce-fips-19.0 | 19.0.5-r1 |
| chainguard | gitlab-rails-ce-fips-19.1 | 19.1.3-r1 |
| chainguard | gitlab-rails-ce-fips-19.2 | 19.2.5-r2 |
| chainguard | gitlab-rails-ce-fips-19.3 | 19.3.1-r3 |
| chainguard | kubeflow-katib | 0.19.0-r40 |
| chainguard | langfuse-2 | 2.95.12-r16 |
| chainguard | langfuse-3 | 3.163.0-r0 |
| chainguard | langfuse-fips-2 | 2.95.12-r19 |
| chainguard | langfuse-fips-3 | 3.162.0-r1 |
| chainguard | librechat | 0.8.4-r3 |
| chainguard | prism | 5.14.3-r13 |
| chainguard | renovate | 43.84.0-r1 |
| chainguard | semaphore | 2.18.12-r2 |
| chainguard | sqlpad | 7.5.7-r27 |
| chainguard | vitess-22 | 22.0.4-r9 |
| chainguard | vitess-23 | 23.0.3-r9 |
| chainguard | wazuh-dashboard | 4.14.6-r2 |
| chainguard | wazuh-dashboard-fips | 4.14.6-r1 |
| debian 11 | node-flatted | sin corrección indicada |
| debian 12 | node-flatted | sin corrección indicada |
| debian 13 | node-flatted | 3.2.7~ds-1+deb13u1 |
| debian 14 | node-flatted | 3.4.2~ds-1 |
| echo | node-flatted | 3.2.7~ds-1+deb13u1 |
| minimos | argo-workflows-3.7 | 3.7.12-r0 |
| minimos | argo-workflows-fips-3.7 | 3.7.12-r0 |
| minimos | nginx-proxy-manager-2 | 2.13.1-r0 |
| minimos | verdaccio | 6.8.0-r0 |
| npm::GitHub Security Advisory npm | flatted | 3.4.2 |
| rapidfort debian 12 | node-flatted | 0:3.2.7~ds-1+deb13u1 |
| rapidfort debian 13 | node-flatted | 0:3.2.7~ds-1+deb13u1 |
| wolfi | eslint | 10.1.0-r0 |
| wolfi | kubeflow-katib | 0.19.0-r40 |
| wolfi | langfuse-3 | 3.163.0-r0 |
| wolfi | prism | 5.14.3-r13 |
| wolfi | renovate | 43.84.0-r1 |
| wolfi | sqlpad | 7.5.7-r27 |
| wolfi | vitess-23 | 23.0.3-r9 |
Referencias
- https://access.redhat.com/errata/RHSA-2026:13826
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/security/cve/CVE-2026-33228
- https://bugzilla.redhat.com/show_bug.cgi?id=2449872
- https://github.com/WebReflection/flatted
- https://github.com/WebReflection/flatted/commit/885ddcc33cf9657caf38c57c7be45ae1c5272802
- https://github.com/WebReflection/flatted/releases/tag/v3.4.2