---
id: CVE-2026-69101
title: >-
  Datavane TIS v5.0.0 contains an XML external entity (XXE) injection
  vulnerability that allows authenticated attackers to perform server-side
  request forgery and out-of-band file exfiltration by supplying a crafted
  taskScript payload to t…
summary: >-
  Datavane TIS v5.0.0 contains an XML external entity (XXE) injection
  vulnerability that allows authenticated attackers to perform server-side
  request forgery and out-of-band file exfiltration by supplying a crafted
  taskScript payload to t…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-611
vendor: datavane
product: tis
affected:
  - tis <= 5.0.0
published: '2026-08-14'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:06:30.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69101'
references:
  - url: 'https://github.com/datavane/tis'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/datavane/tis/commit/2a84a1b84218a303e3e0a4823023363d5a7abfa1
    label: disclosure@vulncheck.com
  - url: 'https://github.com/datavane/tis/issues/496'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/datavane-tis-xxe-injection-via-doeditworkflow-endpoint
    label: disclosure@vulncheck.com
  - url: 'https://github.com/datavane/tis/issues/496'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00464
epssPercentile: 0.37488
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-14T19:06:11.799800Z'
ingestedAt: '2026-09-24T15:45:56.718Z'
---

## Overview

Datavane TIS v5.0.0 contains an XML external entity (XXE) injection vulnerability that allows authenticated attackers to perform server-side request forgery and out-of-band file exfiltration by supplying a crafted taskScript payload to the doEditWorkflow endpoint, which processes XML through an unhardened DocumentBuilderFactory with external entities and DTD loading enabled. Attackers can send a malicious XML document containing an external DTD reference to the edit_workflow action, causing the server to issue outbound HTTP requests to attacker-controlled infrastructure and exfiltrate local files readable by the TIS process user, including configuration files and Derby database credentials.

## Remediation

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