CVE-2026-3204
Received Received - Intake
Improper Input Validation in Devolutions Server Enables Error Message Spoofing

Publication date: 2026-03-03

Last updated on: 2026-03-05

Assigner: Devolutions Inc.

Description
Improper input validation in the error message page in Devolutions Server 2025.3.16 and earlier allows remote attackers to spoof the displayed error message via a specially crafted URL.
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Meta Information
Published
2026-03-03
Last Modified
2026-03-05
Generated
2026-06-16
AI Q&A
2026-03-04
EPSS Evaluated
2026-06-15
NVD
CVE-2026-3204
EUVD
EUVD-2026-9337
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
devolutions devolutions_server to 2025.3.16.0 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability is due to improper input validation in the error message page of Devolutions Server version 2025.3.15 and earlier. It allows remote attackers to craft a special URL that can spoof the error message displayed to users.

Impact Analysis

An attacker exploiting this vulnerability can manipulate the error messages shown to users by sending specially crafted URLs. This can lead to confusion, misdirection, or potentially facilitate phishing or social engineering attacks by displaying misleading information.

Compliance Impact

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Detection Guidance

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