CVE-2026-50189

Appsmith: RCE via Supervisord XML-RPC Admin Interface Exposed via /supervisor Caddy Route

State: Published
Severity: 8.9 High
Published: Jun 24, 2026
Updated: Jun 25, 2026
Reserved: Jun 3, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.9 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-183 Permissive List of Allowed Inputs
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
appsmithappsmithorg	< 2.1Affected

References

https://github.com/appsmithorg/appsmith/security/advisories/GHSA-v49v-673j-g4vj

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