Known exploited vulnerability
CVE-2026-114713
The short answer
CVE-2026-114713 affects UnrealIRCd UnrealIRCd and is rated high (CVSS 8.6). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-11-13: attackers are using it, so patch it first.
What it is
The labeled-response module in UnrealIRCd 6.0.0 before 6.2.7.1 does not escape the IRCv3 "label" message tag when echoing it into replies, which allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.
Weakness: CWE-140.
Severity
8.6 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Exploited (CISA KEV)
Yes, since Nov 13, 2026
Federal due date Nov 16, 2026
EPSS, next 30 days
0.30%
Higher than 23% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- None
What CISA says to do
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…
Affected products
UnrealIRCd. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-114713 being exploited?
Yes. CISA added CVE-2026-114713 to its Known Exploited Vulnerabilities catalog on 2026-11-13, with a federal remediation due date of 2026-11-16.
How do I fix CVE-2026-114713?
CISA's required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Undergoing Analysis. The description is NVD's text, quoted as published.
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