---
id: "CVE-2026-115740"
kind: "vulnerability"
aliases: ["CVE-2026-115740"]
title: "DLP on-prem extensions: SSRF via UNC file path lets server leak SMB credentials"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["dlp", "on-prem", "other", "windows"]
not_affected_if: ["product-not-deployed"]
published_at: "2026-11-05T16:17:34+00:00"
first_seen_at: "2026-11-05T16:40:01+00:00"
updated_at: "2026-11-05T16:41:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115740", "first_seen_at": "2026-11-05T16:40:01+00:00"}]
exploit_sources: []
---

# DLP on-prem extensions: SSRF via UNC file path lets server leak SMB credentials

Versions 11.13.1 and earlier of the DLP on-prem extensions accept arbitrary UNC paths in the file prefix parameter of the OpenEventEvidenceFile.do endpoint without validation. The server opens the attacker-supplied path, so Windows initiates SMB authentication to an attacker-controlled host, which can expose credentials.

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

## How to check

- Check the installed DLP on-prem extensions version against `11.13.1`
- Review whether the `OpenEventEvidenceFile.do` endpoint is reachable from untrusted networks

## Timeline

- 2026-11-05T16:40:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115740

## From the sources

Server side request forgery vulnerability exists in the DLP on-prem extensions version 11.13.1 and earlier allows the file Prefix parameter in the OpenEventEvidenceFile.do endpoint accepts arbitrary UNC paths without validation. The server-side code attempts to open the specified file path, causing Windows to resolve the hostname and initiate SMB authentication to the attacker-controlled host.

---

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