{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:community:*:*:*",
              "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:enterprise:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "18.5.0"
              },
              {
                "fixed": "18.8.7"
              },
              {
                "introduced": "18.9.0"
              },
              {
                "fixed": "18.9.3"
              },
              {
                "introduced": "18.10.0"
              },
              {
                "last_affected": "18.10.0"
              }
            ],
            "source": [
              "CPE_RANGE",
              "CPE_STRING"
            ]
          },
          "events": [
            {
              "introduced": "37cc4da7158316bb9b204cef9b056f16fff1df32"
            },
            {
              "fixed": "bbb3a4b03698954b5a8efb0de7bafc061c303ed6"
            },
            {
              "introduced": "20fe49b575fedd2b8cadc2c0640178879854aeb3"
            },
            {
              "fixed": "d0161a9f097f49a9d33a4d8fe1d5a827ee777d67"
            },
            {
              "introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
            },
            {
              "last_affected": "57c08314af5bc8f317b1967330f92ed029e2c628"
            }
          ],
          "repo": "https://gitlab.com/gitlab-org/gitlab",
          "type": "GIT"
        }
      ],
      "versions": [
        "18.10.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "GitLab",
    "cwe_ids": [
      "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3988.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "18.5"
          },
          {
            "fixed": "18.8.7"
          },
          {
            "introduced": "18.9"
          },
          {
            "fixed": "18.9.3"
          },
          {
            "introduced": "18.10"
          },
          {
            "fixed": "18.10.1"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "18.5"
          },
          {
            "fixed": "18.8.7"
          },
          {
            "introduced": "18.9"
          },
          {
            "fixed": "18.9.3"
          },
          {
            "introduced": "18.10"
          },
          {
            "fixed": "18.10.1"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-3988",
  "modified": "2026-08-17T03:36:30.549553682Z",
  "published": "2026-03-25T16:33:43.952Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/593140"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3988.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3988"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/3597342"
    },
    {
      "type": "PACKAGE",
      "url": "git://git@gitlab.com:gitlab-org/gitlab.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Inefficient Algorithmic Complexity in GitLab"
}