FKIE_CVE-2026-25138

Vulnerability from fkie_nvd - Published: 2026-02-25 20:23 - Updated: 2026-02-27 17:35
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Prior to versions 35.8.3, 38.5.4, and 39.3.1, the WebUI login endpoint returns distinct error messages depending on whether a supplied username exists, allowing unauthenticated attackers to enumerate valid usernames. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue.
References
security-advisories@github.comhttps://cheatsheetseries.owasp.org/cheatsheets/Authentication_Cheat_Sheet.html#authentication-and-error-messagesNot Applicable
security-advisories@github.comhttps://github.com/rucio/rucio/releases/tag/35.8.3Product, Release Notes
security-advisories@github.comhttps://github.com/rucio/rucio/releases/tag/38.5.4Product, Release Notes
security-advisories@github.comhttps://github.com/rucio/rucio/releases/tag/39.3.1Product, Release Notes
security-advisories@github.comhttps://github.com/rucio/rucio/security/advisories/GHSA-38wq-6q2w-hcf9Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/rucio/rucio/security/advisories/GHSA-38wq-6q2w-hcf9Exploit, Vendor Advisory
Impacted products
Vendor Product Version
cern rucio *
cern rucio *
cern rucio *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3BCD5122-895C-41F6-8DDE-5DD999D88FDC",
              "versionEndExcluding": "35.8.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "364DE7B4-B341-4A96-917B-B2D37777CB7E",
              "versionEndExcluding": "38.5.4",
              "versionStartIncluding": "36.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EB66BA62-B3B2-45C5-99AC-59CC9B39F350",
              "versionEndExcluding": "39.3.1",
              "versionStartIncluding": "39.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Prior to versions 35.8.3, 38.5.4, and 39.3.1, the WebUI login endpoint returns distinct error messages depending on whether a supplied username exists, allowing unauthenticated attackers to enumerate valid usernames. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue."
    },
    {
      "lang": "es",
      "value": "Rucio es un framework de software que proporciona funcionalidad para organizar, gestionar y acceder a grandes vol\u00famenes de datos cient\u00edficos utilizando pol\u00edticas personalizables. Antes de las versiones 35.8.3, 38.5.4 y 39.3.1, el endpoint de inicio de sesi\u00f3n de la WebUI devolv\u00eda mensajes de error distintos dependiendo de si un nombre de usuario proporcionado exist\u00eda, permitiendo a atacantes no autenticados enumerar nombres de usuario v\u00e1lidos. Las versiones 35.8.3, 38.5.4 y 39.3.1 solucionan el problema."
    }
  ],
  "id": "CVE-2026-25138",
  "lastModified": "2026-02-27T17:35:41.793",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-25T20:23:47.457",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://cheatsheetseries.owasp.org/cheatsheets/Authentication_Cheat_Sheet.html#authentication-and-error-messages"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/rucio/rucio/releases/tag/35.8.3"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/rucio/rucio/releases/tag/38.5.4"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/rucio/rucio/releases/tag/39.3.1"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/rucio/rucio/security/advisories/GHSA-38wq-6q2w-hcf9"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://github.com/rucio/rucio/security/advisories/GHSA-38wq-6q2w-hcf9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-204"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.