CVE-2026-55454

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the bundled Caddy reverse-proxy's admin API — which has no authentication by default — is bound on 0.0.0.0:2019 inside the container. While this listener is not directly published to the host by docker-compose.yml, it is reachable from the Appsmith server process itself or a SSRF vulnerability. An authenticated low-privileged user can therefore drive the SSRF to issue POST /load (or any other admin-API call) against http://0.0.0.0:2019/, fully replacing the live Caddy configuration and taking over the reverse proxy. This vulnerability is fixed in 2.1.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc	Exploit Third Party Advisory
https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-24 22:16

Updated : 2026-06-26 19:50

NVD link : CVE-2026-55454

Mitre link : CVE-2026-55454

CVE.ORG link : CVE-2026-55454

JSON object : View

Products Affected

appsmith

appsmith

CWE

CWE-749

Exposed Dangerous Method or Function

CWE-1188

Initialization of a Resource with an Insecure Default

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