---
id: "CVE-2026-100164"
kind: "vulnerability"
aliases: ["CVE-2026-100164"]
title: "Rolantis Agentis: observable response lets attackers detect valid accounts"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["agentis", "other", "rolantis", "self-hosted"]
not_affected_if: []
published_at: "2026-10-27T13:16:54+00:00"
first_seen_at: "2026-10-27T13:31:51+00:00"
updated_at: "2026-10-27T13:32:18+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100164", "first_seen_at": "2026-10-27T13:31:51+00:00"}]
---

# Rolantis Agentis: observable response lets attackers detect valid accounts

Rolantis Agentis, a product from Rolantis Information Technologies, returns responses that differ observably in a way that reveals whether an account exists. An attacker can use this account footprinting to build a list of valid users for later attacks.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Agentis version and compare it to `4.8`; the sources do not say where the version is shown.
- unknown

## Fix

- Upgrade Agentis to `4.8` or later, as the advisory affects versions before `4.8`.
- unknown

## Timeline

- 2026-10-27T13:31:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-100164

## From the sources

Observable response discrepancy vulnerability in Rolantis Information Technologies Tourism Industry and Trade Co. Ltd. Agentis allows Account Footprinting.

This issue affects Agentis: before 4.8.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_