{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114713", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-10-22T00:56:41.381Z", "datePublished": "2026-11-08T02:31:48.387Z", "dateUpdated": "2026-11-08T11:04:43.329Z"}, "containers": {"cna": {"affected": [{"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"}]}], "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."}], "metrics": [{"cvssV3_1": {"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"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-140", "description": "CWE-140 Improper Neutralization of Delimiters", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-11-08T02:31:48.387Z"}, "references": [{"url": "https://www.unrealircd.org/"}, {"url": "https://www.unrealircd.org/index/news"}, {"url": "https://forums.unrealircd.org/viewtopic.php?t=9487"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "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"}], "value": "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"}], "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Add the following line to the configuration file of all servers until the patch or upgrade is applied: blacklist-module \"labeled-response\";"}], "value": "Add the following line to the configuration file of all servers until the patch or upgrade is applied: blacklist-module \"labeled-response\";"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2.7.1"}]}]}]}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/11/08/1"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-11-08T11:04:43.329Z"}}]}}

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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": "2026-11-08T11:16:32.810", "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"}]}, "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"}]}

{}

{"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", "title": "UnrealIRCd label\u2011response module fails to escape IRCv3 label tag, enabling server\u2011to\u2011server command injection", "updated": "2026-11-08T04:30:14.428072+00:00", "vendors": ["unrealircd", "unrealircd$PRODUCT$unrealircd"]}