OCTOBER 8, 2026
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Case File

CVE-2026-55177

HIGH · CVSS 7.6 EPSS 0.38% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-30 · Last synced 2026-10-08

CyberRota Analysis

AI-Generated

CloudTAK versions prior to 13.10.0 are vulnerable to a Server-Side Request Forgery (SSRF) attack, allowing any authenticated user to send arbitrary outbound requests to internal addresses without validation. This vulnerability can lead to exposure of sensitive information, such as cloud instance metadata and internal service responses, potentially compromising the security of the deployment environment. Organizations using affected versions should prioritize patching to version 13.10.0 to mitigate the risk of unauthorized data access and internal service enumeration.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-55177
Severity
HIGH
CVSS
7.6
EPSS
0.38%

Original NVD 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.