FKIE_CVE-2026-3988

Vulnerability from fkie_nvd - Published: 2026-03-25 17:17 - Updated: 2026-03-26 17:42
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.
References
cve@gitlab.comhttps://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/Release Notes, Vendor Advisory
cve@gitlab.comhttps://gitlab.com/gitlab-org/gitlab/-/work_items/593140Broken Link
cve@gitlab.comhttps://hackerone.com/reports/3597342Permissions Required
Impacted products
Vendor Product Version
gitlab gitlab *
gitlab gitlab *
gitlab gitlab *
gitlab gitlab *
gitlab gitlab 18.10.0
gitlab gitlab 18.10.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "matchCriteriaId": "991041A7-46AA-49CE-9AA0-D2BF561C4713",
              "versionEndExcluding": "18.8.7",
              "versionStartIncluding": "18.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "91B89AFE-E378-447B-99AB-627A8BE12907",
              "versionEndExcluding": "18.8.7",
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            },
            {
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              "matchCriteriaId": "96F7E7EC-4C2E-4A48-8134-9262B251C89C",
              "versionEndExcluding": "18.9.3",
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              "vulnerable": true
            },
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              "matchCriteriaId": "C3240349-67A3-43E2-BAD9-EFAA3E0A5D31",
              "versionEndExcluding": "18.9.3",
              "versionStartIncluding": "18.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:community:*:*:*",
              "matchCriteriaId": "D5B6ECC9-6AEA-4DD0-B12B-A3A7A9FE91DA",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "2B8DF779-B99E-4096-B734-78AB1849D136",
              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing."
    },
    {
      "lang": "es",
      "value": "GitLab ha remediado un problema en GitLab CE/EE que afectaba a todas las versiones desde la 18.5 antes de la 18.8.7, la 18.9 antes de la 18.9.3 y la 18.10 antes de la 18.10.1 que podr\u00eda haber permitido a un usuario no autenticado causar una denegaci\u00f3n de servicio al hacer que la instancia de GitLab no respondiera debido a una validaci\u00f3n de entrada incorrecta en el procesamiento de solicitudes GraphQL."
    }
  ],
  "id": "CVE-2026-3988",
  "lastModified": "2026-03-26T17:42:09.273",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "cve@gitlab.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-25T17:17:09.553",
  "references": [
    {
      "source": "cve@gitlab.com",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
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      ],
      "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/593140"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://hackerone.com/reports/3597342"
    }
  ],
  "sourceIdentifier": "cve@gitlab.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-407"
        }
      ],
      "source": "cve@gitlab.com",
      "type": "Primary"
    }
  ]
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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