Unrated

Authenticated full-read SSRF in CloudTAK /api/esri routes

IdentifiersCVE-2026-55177CWE-918

CVE-2026-55177 is an authenticated server-side request forgery vulnerability in CloudTAK affecting the ESRI-related API routes exposed under /api/esri*. The flaw arises because attacker-controlled URLs are fetched by the server without adequate IP or DNS safety validation, allowing a user with valid authentication to direct the application to make outbound requests to arbitrary destinations. The vulnerable behavior permits access not only to external hosts but also to internal, loopback, link-local, and cloud metadata-service addresses. Because the server returns the fetched content to the requester, this is a full-read SSRF condition rather than a blind SSRF issue.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated attacker to use the CloudTAK server as a proxy to reach otherwise inaccessible network locations and retrieve the responses. This can expose internal application endpoints, administrative interfaces, cloud instance metadata, and other internal-only services. Likely consequences include internal network enumeration, disclosure of sensitive service responses, and theft of cloud credentials or tokens exposed through metadata services.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, restrict or disable access to the affected /api/esri* functionality for untrusted or lower-privileged users. Apply network egress controls to block the application server from reaching private, loopback, link-local, and metadata-service destinations where operationally feasible. Additionally, prevent server access to cloud instance metadata endpoints and implement URL safety validation equivalent to the vendor fix before any ESRI-related fetch operation.

Remediation

Patch, then assume compromise.

Upgrade @tak-ps/cloudtak to version 13.10.0 or later. The fix adds centralized URL safety validation in the ESRI library path before fetch operations, preventing requests to unsafe destinations such as private, loopback, link-local, and metadata-service addresses.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity