# CVE-2026-114713: CVE-2026-114713

Status: published. Published: 2026-11-08. Updated: 2026-11-08.

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.

## Remediation

- fix: Upgrade to UnrealIRCd 6.2.7.1 or later. Alternatively, apply the hot-patch to fix the issue without restart: ./unrealircd hot-patch bundle-20261107 (source: CNA: mitre)
- workaround: Add the following line to the configuration file of all servers until the patch or upgrade is applied: blacklist-module "labeled-response"; (source: CNA: mitre)

## Affected products and versions

- UnrealIRCd / UnrealIRCd: ≥ 0; < 6.2.7.1 (affected, custom). Source: CNA: mitre

## Severity and prioritization

- CVSS 3.1: 8.6 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N; source: CNA: mitre

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-140

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.unrealircd.org/ (CNA: mitre)

- https://www.unrealircd.org/index/news (CNA: mitre)

- https://forums.unrealircd.org/viewtopic.php?t=9487 (CNA: mitre)

## Provenance

- CNA: mitre: https://www.cve.org/CVERecord?id=CVE-2026-114713; retrieved 2026-11-08; source updated 2026-11-08

Revision: f26f2ec294a03ce291d983831b42f74fe3aa933e426acfd333ecd9bdc4b7257e

Canonical: https://y2.dev/cve/CVE-2026-114713

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