CVE-2026-55835 (GCVE-0-2026-55835)

Vulnerability from cvelistv5 – Published: 2026-10-23 04:14 – Updated: 2026-10-23 04:14
VLAI
Title
Lookyloo: Potential sub-system DoS due to parameter missmatch in notification
Summary
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/<uuid>/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.
Severity
6.9 (Medium)
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
CWE
  • CWE-233 - Improper Handling of Parameters
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7737 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Lookyloo lookyloo Affected: < 1.39.4
guessed Create a notification for this product.
Show details on NVD website
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{
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          "versions": [
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        }
      ],
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            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "NONE",
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            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "NONE"
          }
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          "descriptions": [
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              "description": "CWE-233: Improper Handling of Parameters",
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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          "tags": [
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          "url": "https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj"
        },
        {
          "name": "https://github.com/Lookyloo/lookyloo/pull/1330",
          "tags": [
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        },
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          "tags": [
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          "url": "https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082"
        },
        {
          "name": "https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4"
        }
      ],
      "source": {
        "advisory": "GHSA-66gj-hmcp-5cfj",
        "discovery": "UNKNOWN"
      },
      "title": "Lookyloo: Potential sub-system DoS due to parameter missmatch in notification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55835",
    "datePublished": "2026-10-23T04:14:02.867Z",
    "dateReserved": "2026-06-17T16:29:38.865Z",
    "dateUpdated": "2026-10-23T04:14:02.867Z",
    "state": "PUBLISHED"
  },
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      "percentile": "0.23177"
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    "nvd": {
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                "versions": [
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                    "version": "\u003c 1.39.4"
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          }
        ],
        "id": "CVE-2026-55835",
        "lastModified": "2026-10-23T19:36:32.410",
        "metrics": {
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                "Recovery": "NOT_DEFINED",
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                "availabilityRequirement": "NOT_DEFINED",
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                "exploitMaturity": "NOT_DEFINED",
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                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
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                "valueDensity": "NOT_DEFINED",
                "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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                "vulnConfidentialityImpact": "NONE",
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                "vulnerabilityResponseEffort": "NOT_DEFINED"
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    }
  }
}



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