CVE-2026-50189 Appsmith: RCE via Supervisord XML-RPC Admin Interface Exposed via /supervisor Caddy Route
Authenticated administrators can execute OS commands in the container by abusing an exposed Supervisord XML-RPC interface via a reverse proxy route.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-50189?
CVE-2026-50189 is a high-severity server-side request forgery vulnerability in appsmithorg appsmith, published on 24 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, Appsmith's bundled supervisord exposes an XML-RPC interface on port 9001, reachable from outside the container via a Caddy reverse-proxy route at /supervisor/* on the public ingress. Combined with the APPSMITH_SUPERVISOR_PASSWORD exposed via GET /api/v1/admin/env, any authenticated administrator can send arbitrary XML-RPC calls to supervisord and execute OS commands inside the Docker container via twiddler.addProgramToGroup. This vulnerability is fixed in 2.1.
Which versions are affected by CVE-2026-50189?
1 open source package ship an affected version, including appsmith. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
appsmith Bitnami | All versions | 2.1.0 |
Products include Appsmith Appsmith.
How do I fix CVE-2026-50189?
Upgrade appsmith to 2.1.0 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-50189 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50189 exists.
Other vulnerabilities in appsmithorg appsmith
- CVE-2026-55454 Appsmith: Caddy admin API exposed without authentication
- CVE-2024-55964 Code injection in n/a
- CVE-2026-22794 Account Takeover Vulnerability in Appsmith
- CVE-2026-24042 Appsmith public apps can execute unpublished actions (viewMode confusion)
- CVE-2026-30862 Critical Stored XSS & Privilege Escalation in Appsmith
Sources
Also known as BIT-appsmith-2026-50189, GHSA-v49v-673j-g4vj.