{"id":"BIT-appsmith-2026-55454","summary":"Appsmith: Caddy admin API exposed without authentication","details":"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.","aliases":["CVE-2026-55454","GHSA-8jvv-gwqg-6vjc"],"modified":"2026-09-08T08:45:47.468353669Z","published":"2026-06-29T05:37:57.360Z","database_specific":{"severity":"Critical","cpes":["cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55454"}],"affected":[{"package":{"name":"appsmith","ecosystem":"Bitnami","purl":"pkg:bitnami/appsmith"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.1.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/appsmith/BIT-appsmith-2026-55454.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}