Improper handling of multiline messages in matrix-appservice-irc

{
  "id": "7a7ab9fd1bd78a96b12b45306cfd8677b141a81460fde563c7da5c23c53961d4",
  "url": "https://osv.dev/vulnerability/CVE-2022-29166",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Improper handling of multiline messages in matrix-appservice-irc",
    "summary": "matrix-appservice-irc is a Node.js IRC bridge for Matrix. The vulnerability in node-irc allows an attacker to manipulate a Matrix user into executing IRC commands by having them reply to a maliciously crafted message. The vulnerability has been patched in matrix-appservice-irc 0.33.2. Refrain from replying to messages from untrusted participants in IRC-bridged Matrix rooms. There are no known workarounds for this issue.",
    "evidence": "osv:CVE-2022-29166",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-29166",
      "aliases": [
        "CVE-2022-29166",
        "GHSA-37hr-348p-rmf4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/matrix-org/matrix-appservice-irc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8faf9614e80073e3cf07c96dbd295379d80f4161"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.34.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.32.1",
            "0.26.1",
            "0.26.0",
            "0.26.0-rc2",
            "0.26.0-rc1",
            "0.25.0-rc1",
            "0.24.0",
            "0.24.0-rc1",
            "0.23.0-fosdem",
            "0.23.0",
            "0.23.0-rc1",
            "0.22.0",
            "0.22.0-rc1",
            "0.21.0",
            "0.21.0-rc3",
            "0.20.2",
            "develop-2019-02-17",
            "0.15.2",
            "0.14.0-rc4",
            "0.14.0-rc3",
            "0.14.0-rc2",
            "0.14.0-rc1",
            "develop-2019-11-28",
            "develop-2019-11-26",
            "develop-2019-11-15",
            "develop-2019-11-12",
            "matrix-org-testing",
            "0.10.1",
            "v0.9.1",
            "v0.9.0",
            "v0.9.0-rc1",
            "0.7.1",
            "0.7.0",
            "0.5.0",
            "0.1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-29166.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.024341646Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29166.json",
        "https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-37hr-348p-rmf4",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-29166",
        "https://matrix.org/blog/2022/05/04/0-34-0-security-release-for-matrix-appservice-irc-high-severity"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-74"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29166.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-29166",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521633,
  "published_at": "2022-05-05T23:05:14+00:00"
}