---
id: CVE-2026-55177
title: >-
  CloudTAK is a browser-based Common Operating Picture and situational awareness
  tool compatible with TAK
summary: >-
  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 …
severity: high
cvss: 7.6
cvssVector: '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'
cwe:
  - CWE-918
vendor: dfpc-coe
product: CloudTAK
affected:
  - CloudTAK < 13.10.0
patched:
  - '@tak-ps/cloudtak 13.10.0'
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T20:17:33.477'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55177'
references:
  - url: 'https://github.com/dfpc-coe/CloudTAK/releases/tag/v13.10.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/dfpc-coe/CloudTAK/security/advisories/GHSA-r95q-fp26-h3hc
    label: security-advisories@github.com
  - url: >-
      https://github.com/dfpc-coe/CloudTAK/security/advisories/GHSA-r95q-fp26-h3hc
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-r95q-fp26-h3hc'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-30T19:32:16.314025Z'
cvssSource: cna
aliases:
  - GHSA-r95q-fp26-h3hc
ecosystem: npm
ingestedAt: '2026-07-17T22:16:59.695Z'
epss: 0.0038
epssPercentile: 0.318
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55177)

Affected packages:

- `@tak-ps/cloudtak < 13.10.0`

Patched in:

- `@tak-ps/cloudtak 13.10.0`

Source: https://github.com/advisories/GHSA-r95q-fp26-h3hc