Input Validation Vulnerability in Devolutions Server by Devolutions
CVE-2026-3204

9.8CRITICAL

Key Information:

Vendor

Devolutions

Status
Server
Vendor
CVE Published:
3 March 2026

What is CVE-2026-3204?

An input validation vulnerability exists in Devolutions Server 2025.3.15 and earlier, where remote attackers can exploit this flaw to manipulate the error messages displayed to users. By sending specially crafted URLs, attackers can spoof the content of the error messages, potentially leading to misinformation or further exploitation of the application. This vulnerability emphasizes the importance of rigorous input validation practices to ensure the integrity and safety of user-facing content.

Affected Version(s)

Server 0 <= 2025.3.16

References

https://devolutions.net/security/advisories/DEVO-2026-0005

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.