---
id: "CVE-2026-123991"
page: "https://infrastack.ai/live/CVE-2026-123991"
kind: "vulnerability"
aliases: ["CVE-2026-123991"]
title: "DataEase: authentication bypass lets remote users upload arbitrary files"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["dataease", "file-upload", "package", "self-hosted"]
not_affected_if: ["version-2.10.28-or-later"]
published_at: "2026-11-07T17:16:34+00:00"
first_seen_at: "2026-11-07T17:18:13+00:00"
updated_at: "2026-11-07T17:20:18+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123991", "first_seen_at": "2026-11-07T17:18:13+00:00"}]
exploit_sources: []
---

# DataEase: authentication bypass lets remote users upload arbitrary files

Link for people: https://infrastack.ai/live/CVE-2026-123991 (this .md is for agents)

DataEase up to 2.10.27 has a flaw in its authentication filter: a file-type whitelist check lets a crafted upload request skip authentication. An attacker can upload arbitrary files to the server remotely, and a public exploit exists.

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

## How to check

- Check the installed DataEase version against `2.10.27` and older.
- Look for unexpected uploaded files in the DataEase upload or static-resource directories.

## Fix

- DataEase: upgrade to `2.10.28`.

## Timeline

- 2026-11-07T17:18:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123991

## Documents

- [fix] Release notes: github.com https://github.com/dataease/dataease/releases/tag/v2.10.28

## From the sources

A vulnerability was detected in DataEase up to 2.10.27. Affected by this vulnerability is the function WhitelistUtils.endsWithAny of the file WhitelistUtils.java of the component Authentication Filter. Performing a manipulation of the argument File results in unrestricted upload. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 2.10.28 addresses this issue. It is advisable to upgrade the affected component. The vendor confirms: "This issue has been addressed by enforcing authentication on the standalone static-resource upload endpoint independently of the URI suffix whitelist."

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