Remote Command Injection Vulnerability in UnrealIRCd from Unreal Software
CVE-2026-114713

8.6HIGH

Key Information:

Vendor

Unrealircd

Status
Unrealircd
Vendor
CVE Published:
8 November 2026

What is CVE-2026-114713?

The labeled-response module in UnrealIRCd versions 6.0.0 through 6.2.7.1 contains a vulnerability that fails to properly escape the IRCv3 'label' message tag in server replies. This oversight allows malicious users operating within a network with interconnected servers to inject commands that are executed with elevated server privileges. As a result, unauthorized actions can be taken, compromising the integrity and security of the IRC communication infrastructure.

Affected Version(s)

UnrealIRCd 0 < 6.2.7.1

References

https://www.unrealircd.org/
https://www.unrealircd.org/index/news
https://forums.unrealircd.org/viewtopic.php?t=9487

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.