NCSC-2026-0303

Vulnerability from csaf_ncscnl - Published: 2026-08-18 08:10 - Updated: 2026-08-18 08:10
Summary
Kwetsbaarheden verholpen in GitLab door GitLab Inc.
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: GitLab Inc. heeft kwetsbaarheden verholpen in GitLab Community Edition (CE) en Enterprise Edition (EE).
Interpretaties: De kwetsbaarheden bevinden zich in de GraphQL-implementatie van GitLab. Een eerste kwetsbaarheid maakte het mogelijk voor niet-geauthenticeerde gebruikers om via een GraphQL-directive ongeautoriseerde wijzigingen of verwijderingen uit te voeren op publieke projecten en gebruikersdata. Een tweede kwetsbaarheid stelde niet-geauthenticeerde gebruikers in staat om mutaties uit te voeren via GET-requests door onjuiste validatie van GraphQL multiplex queries, waarbij mutatie-operaties niet correct werden beperkt. Hierdoor kunnen onbevoegden ongeautoriseerde wijzigingen aanbrengen in de staat van de server.
Oplossingen: GitLab Inc. heeft updates uitgebracht die deze kwetsbaarheden verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-352: Cross-Site Request Forgery (CSRF)
CVE-2026-19478

GitLab versions 18.2 to before 18.11.11, 19.0 to before 19.0.8, 19.1 to before 19.1.6, and 19.2 to before 19.2.4 contained a vulnerability allowing unauthenticated users to remotely modify or delete public projects and user data via a GraphQL directive.

9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
GitLab / GitLab
 vers:unknown/*
CVE-2026-19650

GitLab addressed a security flaw in multiple GitLab CE/EE versions where unauthenticated users could execute mutations via GET requests due to improper validation in GraphQL multiplex query handling.

7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
CWE-352 - Cross-Site Request Forgery (CSRF)
Affected products
Product Identifier Version Remediation
vers:unknown/*
GitLab / GitLab
 vers:unknown/*
References
To clipboard 

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "GitLab Inc. heeft kwetsbaarheden verholpen in GitLab Community Edition (CE) en Enterprise Edition (EE).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden bevinden zich in de GraphQL-implementatie van GitLab. Een eerste kwetsbaarheid maakte het mogelijk voor niet-geauthenticeerde gebruikers om via een GraphQL-directive ongeautoriseerde wijzigingen of verwijderingen uit te voeren op publieke projecten en gebruikersdata. Een tweede kwetsbaarheid stelde niet-geauthenticeerde gebruikers in staat om mutaties uit te voeren via GET-requests door onjuiste validatie van GraphQL multiplex queries, waarbij mutatie-operaties niet correct werden beperkt. Hierdoor kunnen onbevoegden ongeautoriseerde wijzigingen aanbrengen in de staat van de server.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "GitLab Inc. heeft updates uitgebracht die deze kwetsbaarheden verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
        "title": "CWE-94"
      },
      {
        "category": "general",
        "text": "Cross-Site Request Forgery (CSRF)",
        "title": "CWE-352"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-released/"
      }
    ],
    "title": "Kwetsbaarheden verholpen in GitLab door GitLab Inc.",
    "tracking": {
      "current_release_date": "2026-08-18T08:10:44.366248Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0303",
      "initial_release_date": "2026-08-18T08:10:44.366248Z",
      "revision_history": [
        {
          "date": "2026-08-18T08:10:44.366248Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "GitLab"
          }
        ],
        "category": "vendor",
        "name": "GitLab"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-19478",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "GitLab versions 18.2 to before 18.11.11, 19.0 to before 19.0.8, 19.1 to before 19.1.6, and 19.2 to before 19.2.4 contained a vulnerability allowing unauthenticated users to remotely modify or delete public projects and user data via a GraphQL directive.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-19478 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-19478.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-19478"
    },
    {
      "cve": "CVE-2026-19650",
      "cwe": {
        "id": "CWE-352",
        "name": "Cross-Site Request Forgery (CSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Cross-Site Request Forgery (CSRF)",
          "title": "CWE-352"
        },
        {
          "category": "description",
          "text": "GitLab addressed a security flaw in multiple GitLab CE/EE versions where unauthenticated users could execute mutations via GET requests due to improper validation in GraphQL multiplex query handling.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-19650 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-19650.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-19650"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.


Detection rules are retrieved from Rulezet.