CVE-2026-114713UnrealIRCd Vulnerability
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…
Published Nov 8, 2026 · Updated Nov 13, 2026 · Also known as ALPINE-CVE-2026-114713, EUVD-2026-119377, GHSA-237f-p9h6-wq4r
Key Facts
Patch immediately- CVE-2026-114713 is a high-severity vulnerability (CVSS 8.6 v3.1) affecting UnrealIRCd.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV since Nov 13, 2026. No public exploit code is known.
- EPSS estimates a 0.3% probability of exploitation in the next 30 days.
- Fixed versions are available, including UnrealIRCd 6.1.10-r1, UnrealIRCd 6.2.7.1, unrealircd/unrealircd 6.2.7.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
EPSS (30-day exploit likelihood)
0.3%
Higher than 23.2% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
50/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 13, 2026
5 days after publication
Federal due date
Nov 16, 2026
3 days left
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Required action (CISA): 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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Advisories And Exploit References
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 13, 2026 | Nov 16, 2026 | Not reported |
| Industry KEV feed | Nov 13, 2026 | Nov 16, 2026 | Not reported |
| CIRCL KEV | Nov 13, 2026 | Nov 16, 2026 | Not reported |
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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| UnrealIRCdUnrealircd | See advisory | 6.2.7.1 |
Patched Releases
UnrealIRCd
6.1.10-r1, 6.2.7.1
unrealircd/unrealircd
6.2.7.1
Timeline
Publicly disclosed
Nov 8, 2026
Added to CISA KEV
Nov 13, 2026
Added to Industry KEV feed
Nov 13, 2026
Added to CIRCL KEV
Nov 13, 2026
Last updated
Nov 13, 2026
Weakness Type
- CWE-93 Improper Neutralization of CRLF Sequences
- CWE-140 Improper Neutralization of Delimiters
References
- advisorysecurity.alpinelinux.org · CVE-2026-114713
- othercisa.gov · known-exploited-vulnerabilities-catalog
- otherforums.unrealircd.org · viewtopic.php
- otherunrealircd.org
- otherunrealircd.org · news
FAQ
Common Questions.
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.
Affected: UnrealIRCd. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV since Nov 13, 2026.
Yes. It was added on Nov 13, 2026 with a federal remediation due date of Nov 16, 2026.
No public exploit code is known.
Fixed versions are available, including UnrealIRCd 6.1.10-r1, UnrealIRCd 6.2.7.1, unrealircd/unrealircd 6.2.7.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-114713 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo