CVE-2026-3204
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| devolutions | devolutions_server | to 2025.3.16.0 (inc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know