Appsmith: Caddy admin API exposed without authentication_CVE-2026-55454

{
    "lastseen": "",
    "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 \u2014 which has no authentication by default \u2014 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.",
    "published": "2026-06-24T21:38:07.844Z",
    "modified": "2026-06-24T21:38:07.844Z",
    "type": "cve",
    "title": "Appsmith: Caddy admin API exposed without authentication",
    "source": "GitHub_M",
    "references": "https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc",
    "id": "CVE-2026-55454",
    "bulletinFamily": "",
    "cwe": [
        "CWE-749",
        "CWE-1188"
    ],
    "cvelist": null,
    "sourceData": "appsmithorg appsmith < 2.1",
    "sourceHref": "",
    "cvss": {
        "score": 9.9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "appsmith",
    "version": "< 2.1",
    "vendor": "appsmithorg",
    "ai_description": "Caddy admin API exposed without authentication, allowing low-privileged users to take over the reverse proxy via SSRF vulnerability",
    "ai_severity": "CRITICAL",
    "ai_vendor": "Appsmith",
    "ai_product": "Appsmith",
    "ai_version": "< 2.1",
    "ai_score": 9.9
}