Flowsint: Stored XSS on map node marker in map page

{
  "id": "b21d302be81def102c40be26ec3d4c254408e1e92932ee65208bfd027b5ca12e",
  "url": "https://osv.dev/vulnerability/CVE-2026-42157",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Flowsint: Stored XSS on map node marker in map page",
    "summary": "Flowsint is an open-source OSINT graph exploration tool designed for cybersecurity investigation, transparency, and verification. Prior to 1.2.3, a remote attacker can create a map node with a malicious label that contains arbitrary HTML. When the map tab is selected and a map node marker is selected, it will render the arbitrary HTML, potentially triggering stored XSS. This vulnerability is fixed in 1.2.3.",
    "evidence": "osv:CVE-2026-42157",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-42157",
      "aliases": [
        "CVE-2026-42157",
        "GHSA-gj93-2vcq-729w"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/reconurge/flowsint",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7d33b813def003469a99a9e29ce910bc4a6850a4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.3"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42157.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.901290982Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42157.json",
        "https://github.com/reconurge/flowsint/security/advisories/GHSA-gj93-2vcq-729w",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42157"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42157.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42157",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490530,
  "published_at": "2026-05-12T22:58:26.279+00:00"
}