CVE-2026-89078

{
  "id": "CVE-2026-89078",
  "sourceIdentifier": "[email protected]",
  "published": "2026-09-24T00:17:22.060",
  "lastModified": "2026-10-31T00:16:51.750",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "GitLab",
          "product": "GitLab",
          "defaultStatus": "unaffected",
          "cpes": [
            "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
          ],
          "repo": "git://[email protected]:gitlab-org/gitlab.git",
          "versions": [
            {
              "version": "19.2",
              "lessThan": "19.2.7",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.3",
              "lessThan": "19.3.3",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "19.4",
              "lessThan": "19.4.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-09-24T00:00:00+00:00",
          "id": "CVE-2026-89078",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "versionStartIncluding": "19.2.0",
              "versionEndExcluding": "19.2.7",
              "matchCriteriaId": "2E337204-7AC0-4D9A-ADE3-D435F0E8F4CB"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "versionStartIncluding": "19.2.0",
              "versionEndExcluding": "19.2.7",
              "matchCriteriaId": "501CC95C-E50C-47C8-A7E0-68B106B22291"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "versionStartIncluding": "19.3.0",
              "versionEndExcluding": "19.3.3",
              "matchCriteriaId": "053EF913-CD59-404C-8878-B42B122608DD"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "versionStartIncluding": "19.3.0",
              "versionEndExcluding": "19.3.3",
              "matchCriteriaId": "FDD16091-261D-4616-BF85-70CF011C6740"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:19.4.0:*:*:*:community:*:*:*",
              "matchCriteriaId": "476CE485-460C-4EBE-AC16-D7AE6C30DF50"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gitlab:gitlab:19.4.0:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "DED8DBAE-9FCD-40A4-9A9B-BAC26B4CBD44"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/",
      "source": "[email protected]",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/628577",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
      "url": "https://hackerone.com/reports/4019059",
      "source": "[email protected]",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}