Appsmith: RCE via Supervisord XML-RPC Admin Interface Exposed via /supervisor Caddy Route
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| appsmithorg | appsmith | before 2.1 | 2.1 | Patch available | CNA |
- appsmith Vendorappsmithorg Affected before 2.1 Fixed in 2.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:* | before 2.1 | Vulnerable | appsmithorg |
- cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:* Versions before 2.1 Vulnerable ·appsmithorg
Remediation
- Fix · CNA appsmith (appsmithorg) Fixed in 2.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-50189
More appsmithorg Appsmith vulnerabilities
- TI-2026-40018 Appsmith: Caddy admin API exposed without authentication CVSS 3.1CRITICAL 9.9
- TI-2026-18312 Account Takeover Vulnerability in Appsmith CVSS 3.1CRITICAL 9.7
- TI-2026-23691 Critical Stored XSS & Privilege Escalation in Appsmith CVSS 3.1CRITICAL 9.1
- TI-2024-34357 AppSmith Community 1.8.3 before 1.46 allows SSRF via New DataSource for application/json… CVSS 3.1HIGH 8.5
- TI-2022-03744 Server-Side Request Forgery (SSRF) in appsmithorg/appsmith CVSS 3.1MEDIUM 6.5
- TI-2026-06406 Cross-site scripting in appsmithorg Appsmith CVSS 3.1MEDIUM 6.3
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences