{"cve":"CVE-2026-55177","nvd":{"published":"2026-09-30T17:16:46.787","modified":"2026-09-30T20:17:33.477","status":"Awaiting Analysis","description":"CloudTAK is a browser-based Common Operating Picture and situational awareness tool compatible with TAK. Prior to version 13.10.0, every route in the ESRI helper family (api/routes/esri.ts) takes a fully attacker-controlled URL from the request (POST /api/esri body url, and the portal / server / layer query parameters on the GET /api/esri/* routes) and passes it into EsriBase / EsriProxyPortal / EsriProxyServer / EsriProxyLayer in api/lib/esri.ts, which fetch it with the bare fetch from @tak-ps/etl. No IP / DNS / hostname classification is applied at any point, so the destination is never validated against private, loopback, or link-local ranges. Any authenticated user (the routes only require Auth.is_auth(config, req, { anyResources: true }), i.e. any token, not an admin) can therefore make the CloudTAK server issue arbitrary outbound GET/POST requests to internal addresses such as the cloud instance-metadata service (169.254.169.254), loopback admin ports (127.0.0.1:<port>), and other hosts reachable only from inside the deployment VPC. This is a full-read SSRF, not blind: on success the upstream JSON body is returned to the caller via res.json(...), and on failure the upstream error string is reflected verbatim as ESRI Server Error: <message>. An attacker can read cloud metadata (and the temporary IAM credentials the instance role exposes), enumerate internal services, and exfiltrate their response bodies. The sniff() URL classifier provides no protection: it only pattern-matches the pathname (/rest, /arcgis/rest, /sharing/rest), so a URL like http://169.254.169.254/arcgis/rest or http://127.0.0.1:8500/rest passes sniff() and is fetched. This issue has been patched in version 13.10.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.6},"cvss_v3":null,"cwes":["CWE-918"],"references":["https://github.com/dfpc-coe/CloudTAK/releases/tag/v13.10.0","https://github.com/dfpc-coe/CloudTAK/security/advisories/GHSA-r95q-fp26-h3hc","https://github.com/dfpc-coe/CloudTAK/security/advisories/GHSA-r95q-fp26-h3hc"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:48.555445741+00:00"},"epss":{"cve":"CVE-2026-55177","score":0.0038,"percentile":0.31696,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-r95q-fp26-h3hc","url":"https://osv.dev/vulnerability/GHSA-r95q-fp26-h3hc","summary":"CloudTAK: Authenticated full-read SSRF in the /api/esri* routes — user-controlled URL fetched with no IP-classification guard","modified":"2026-07-17T21:56:43.644423Z","packages":[{"ecosystem":"npm","name":"@tak-ps/cloudtak","purl":"pkg:npm/%40tak-ps/cloudtak","ranges":["<13.10.0"],"fixed":["13.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}