CVE-2026-55454
Description
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.
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Affected products
3cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*range: <2.1
- (no CPE)range: <2.1
Patches
Vulnerability mechanics
References
1- github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjcnvdExploitThird Party Advisory
News mentions
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