CVE-2026-55454

{"id": "CVE-2026-55454", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55454", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-25T15:11:31.039499Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "appsmithorg", "product": "appsmith", "versions": [{"status": "affected", "version": "< 2.1"}]}]}], "published": "2026-06-24T22:16:49.003", "references": [{"url": "https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/appsmithorg/appsmith/security/advisories/GHSA-8jvv-gwqg-6vjc", "tags": ["Exploit", "Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-749"}, {"lang": "en", "value": "CWE-1188"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Appsmith es una plataforma para construir paneles de administraci\u00f3n, herramientas internas y cuadros de mando. Antes de la versi\u00f3n 2.1, la API de administraci\u00f3n del proxy inverso Caddy incluido - que no tiene autenticaci\u00f3n por defecto - est\u00e1 vinculada en 0.0.0.0:2019 dentro del contenedor. Si bien este oyente no se publica directamente en el host por docker-compose.yml, es accesible desde el propio proceso del servidor Appsmith o una vulnerabilidad SSRF. Un usuario autenticado con bajos privilegios puede, por lo tanto, impulsar la SSRF para emitir POST /load (o cualquier otra llamada a la API de administraci\u00f3n) contra http://0.0.0.0:2019/, reemplazando completamente la configuraci\u00f3n de Caddy en vivo y tomando el control del proxy inverso. Esta vulnerabilidad se corrige en la versi\u00f3n 2.1."}], "lastModified": "2026-10-25T23:10:00.167", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FE2EAB6-276F-426B-BDD2-BF6E6CCF5E60", "versionEndExcluding": "2.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}