CVE-2026-114713

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["labeled-response"], "product": "UnrealIRCd", "programFiles": ["src/modules/labeled-response.c"], "programRoutines": [{"name": "labeled_response_mtag_is_ok()"}], "repo": "https://github.com/unrealircd/unrealircd", "vendor": "UnrealIRCd", "versions": [{"lessThan": "6.2.7.1", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-114713", "lastModified": "2026-11-13T05:17:52.333", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "cve@mitre.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-114713", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-11-08T03:16:33.410", "references": [{"source": "cve@mitre.org", "url": "https://forums.unrealircd.org/viewtopic.php?t=9487"}, {"source": "cve@mitre.org", "url": "https://www.unrealircd.org/"}, {"source": "cve@mitre.org", "url": "https://www.unrealircd.org/index/news"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/11/08/1"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-140"}], "source": "cve@mitre.org", "type": "Secondary"}]}

{"bugzilla": {"description": "unrealircd: unrealircd: Command injection via unescaped message tag", "id": "2568818", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2568818"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-93", "details": ["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.", "A flaw was found in UnrealIRCd. The labeled-response module fails to properly escape the label message tag when echoing it into replies. A connected user on an IRC (Internet Relay Chat) network with linked servers can exploit this issue to inject server-to-server commands that are executed with server authority, compromising network integrity."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-114713", "public_date": "2026-11-08T02:31:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-114713\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-114713\nhttps://forums.unrealircd.org/viewtopic.php?t=9487\nhttps://www.unrealircd.org/\nhttps://www.unrealircd.org/index/news"], "statement": "Red Hat rates this vulnerability as Important because an unauthenticated network user can manipulate client tags to execute commands with elevated server trust across linked daemons, bypassing trust boundaries between nodes. UnrealIRCd is not provided or maintained in Red Hat Enterprise Linux or other Red Hat offerings, so standard enterprise installations remain unaffected. The flaw specifically requires an interconnected multi-node topology where reflected message identifiers are processed across server-to-server connections without delimiter sanitization.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,6.2.7.1)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "UnrealIRCd", "source": "cna", "vendor": "UnrealIRCd"}, "product": "unrealircd", "vendor": "unrealircd"}], "created": "2026-11-08T03:30:15.787282+00:00", "updated": "2026-11-10T08:45:16.534944+00:00", "vendors": ["unrealircd", "unrealircd$PRODUCT$unrealircd"]}