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              "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels"
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              "value": "\u003cp\u003eRansomLook contains multiple weaknesses in its authentication endpoint that allow an unauthenticated remote attacker to enumerate valid usernames, perform unrestricted password-guessing attacks, and potentially exhaust application worker resources.\u003c/p\u003e\u003cp\u003eFor local authentication, the login implementation previously checked whether a submitted username existed before invoking the password hash verification function. Requests containing a nonexistent username therefore returned significantly faster than requests for valid accounts, for which the computationally expensive password verification routine was executed. A remote attacker could measure these response-time differences to determine which usernames correspond to valid RansomLook accounts.\u003c/p\u003e\u003cp\u003eIn addition, the \u003ccode\u003e/login\u003c/code\u003e endpoint did not restrict the number or frequency of failed authentication attempts. An attacker could consequently perform password brute-force, dictionary, password-spraying, or credential-stuffing attacks against known accounts without server-side throttling. For valid usernames, each authentication attempt also invokes the password key-derivation function, which consumes a significant amount of CPU time. A sufficiently high rate of login attempts could therefore occupy the application\u0027s synchronous Gunicorn workers and cause a denial of service affecting the entire application.\u003c/p\u003e\u003cp\u003eThe issue has been addressed by always performing password verification using a randomly generated dummy password hash when the supplied username does not exist, eliminating the username-dependent timing discrepancy. Failed authentication attempts are additionally rate-limited per client IP address using Valkey/Redis, with five failed attempts within five minutes resulting in a one-hour block. The reverse-proxy configuration was also updated so that the application derives the client address from a trusted \u003ccode\u003eX-Forwarded-For\u003c/code\u003e value that cannot be overridden by a client-supplied header.\u003c/p\u003e\u003cbr\u003e"
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          "product": "ransomlook",
          "vendor": "ransomlook",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Jeroen Pinoy"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Jeroen Pinoy"
        },
        {
          "lang": "en",
          "type": "remediation verifier",
          "value": "Fafner [_KeyZee_]"
        }
      ],
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          "lang": "en",
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              "type": "text/html",
              "value": "\u003cdiv\u003eThe API in the affected application improperly filters private location entries in `website/web/api/genericapi.py`.\u0026nbsp;\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eBecause the code removes elements from a list while iterating over it, entries marked as private may be unintentionally retained in API responses, allowing unauthorized disclosure of non-public location information.\u003c/div\u003e"
            }
          ],
          "value": "The API in the affected application improperly filters private location entries in `website/web/api/genericapi.py`.\u00a0\n\n\n\n\nBecause the code removes elements from a list while iterating over it, entries marked as private may be unintentionally retained in API responses, allowing unauthorized disclosure of non-public location information."
        }
      ],
      "impacts": [
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          ]
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            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "AMBER",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/U:Amber",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "orgId": "00000000-0000-4000-9000-000000000000"
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      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/RansomLook/RansomLook/commit/80cdfb51a2ac225a2af370e2d7c346734daaee83"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "RansomLook - Improper Filtering of Private Location Entries in API Endpoints Leads to Information Exposure",
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        {
          "recordType": "advisory",
          "vulnId": "gcve-1-2026-0025"
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    "cveId": "CVE-2026-40584",
    "datePublished": "2026-04-12T15:22:00.000Z",
    "dateUpdated": "2026-04-15T20:29:51.794609Z",
    "requesterUserId": "00000000-0000-4000-9000-000000000000",
    "serial": 1,
    "state": "PUBLISHED",
    "vulnId": "GCVE-1-2026-0025",
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