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        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-10-22T00:56:41.381Z",
        "datePublished": "2026-11-08T02:31:48.387Z",
        "dateUpdated": "2026-11-13T20:58:23.501Z"
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                            "name": "labeled_response_mtag_is_ok()"
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                    "repo": "https://github.com/unrealircd/unrealircd",
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                            "version": "0",
                            "versionType": "custom"
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            ],
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                {
                    "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"
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                {
                    "descriptions": [
                        {
                            "cweId": "CWE-140",
                            "description": "CWE-140 Improper Neutralization of Delimiters",
                            "lang": "en",
                            "type": "CWE"
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                    ]
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            "references": [
                {
                    "url": "https://www.unrealircd.org/"
                },
                {
                    "url": "https://www.unrealircd.org/index/news"
                },
                {
                    "url": "https://forums.unrealircd.org/viewtopic.php?t=9487"
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                            "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"
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            ],
            "workarounds": [
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                    "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\";"
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                "title": "CVE Program Container",
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                        "url": "http://www.openwall.com/lists/oss-security/2026/11/08/1"
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