Improper Control of Generation of Code ('Code Injection') in GitLab

{
  "id": "0d6dba61f764fbcff340cfaf973cee18ee3fb5112971dd04b9e7c41afa619a93",
  "url": "https://osv.dev/vulnerability/CVE-2026-1516",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Improper Control of Generation of Code ('Code Injection') in GitLab",
    "summary": "GitLab has remediated an issue in GitLab EE affecting all versions from 18.0.0 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that in Code Quality reports could have allowed an authenticated user to leak IP addresses of users viewing the report via specially crafted content.",
    "evidence": "osv:CVE-2026-1516",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-1516",
      "aliases": [
        "BIT-gitlab-2026-1516",
        "CVE-2026-1516"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "504fd9e5236e13d674e051c6b8a1e9892b371c58"
                },
                {
                  "fixed": "0e5855944a09654b84df0e4549c957a5d8c11c9d"
                },
                {
                  "introduced": "20fe49b575fedd2b8cadc2c0640178879854aeb3"
                },
                {
                  "fixed": "195c0c16799d8e10e8c16f129b0719f6c48b6110"
                },
                {
                  "introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
                },
                {
                  "fixed": "1dcd29ee5eb310bc7572339a95188e123e83970b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "18.0.0"
                      },
                      {
                        "fixed": "18.8.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "18.9.0"
                      },
                      {
                        "fixed": "18.9.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "18.10.0"
                      },
                      {
                        "fixed": "18.10.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v18.9.0-ee",
            "v18.9.4-ee",
            "v18.10.2-ee",
            "v18.10.0-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1516.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:48.724434780Z",
      "provider": "osv",
      "references": [
        "https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/",
        "https://gitlab.com/gitlab-org/gitlab/-/work_items/587893",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1516.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-1516",
        "https://hackerone.com/reports/3514461"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-94"
        ],
        "cna_assigner": "GitLab",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "18.0.0"
                  },
                  {
                    "fixed": "18.8.9"
                  },
                  {
                    "introduced": "18.9"
                  },
                  {
                    "fixed": "18.9.5"
                  },
                  {
                    "introduced": "18.10"
                  },
                  {
                    "fixed": "18.10.3"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "18.0.0"
                  },
                  {
                    "fixed": "18.8.9"
                  },
                  {
                    "introduced": "18.9"
                  },
                  {
                    "fixed": "18.9.5"
                  },
                  {
                    "introduced": "18.10"
                  },
                  {
                    "fixed": "18.10.3"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1516.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-1516",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505825,
  "published_at": "2026-04-08T22:25:57.848+00:00"
}