{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "1.39.4"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "d5b9a401998cd50b88e5d7425f82baac78d8f082"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v1.39.4",
                "range": [
                  {
                    "fixed": "13880471db6a28ee849c047aa6d963cb8013713a"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13880471db6a28ee849c047aa6d963cb8013713a"
            },
            {
              "fixed": "d5b9a401998cd50b88e5d7425f82baac78d8f082"
            }
          ],
          "repo": "https://github.com/lookyloo/lookyloo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-66gj-hmcp-5cfj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-233"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55835.json"
  },
  "details": "Lookyloo is a web interface that allows users to capture a website page and then display a tree of domains that call each other. Prior to version 1.39.4, an unauthenticated user can trigger Lookyloo's \"report a capture\" email on demand (this is expected). The /json/\u003cuuid\u003e/report API endpoint (CaptureReport) is incorrectly passing the email and comment parameters, overwriting as_admin. When True, as_admin will trigger a search query on a MISP instance (if configured) and add a list of matching URLs in the email sent to the analyst (not the submitter, so there is no risk of leaking information) . It could potentially cause a DoS on the MISP instance. This issue has been patched in version 1.39.4.",
  "id": "CVE-2026-55835",
  "modified": "2026-10-28T02:30:55.960560147Z",
  "published": "2026-10-23T04:14:02.867Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55835.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55835"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Lookyloo/lookyloo/pull/1330"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Lookyloo: Potential sub-system DoS due to parameter missmatch in notification"
}