NCSC-2026-0072

Vulnerability from csaf_ncscnl - Published: 2026-02-27 07:15 - Updated: 2026-02-27 07:15
Summary
Kwetsbaarheden verholpen in GitLab

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 heeft kwetsbaarheden verholpen in versies 9.0 tot maar niet inclusief 18.7.5, 18.8 tot maar niet inclusief 18.8.5, en 18.9 tot maar niet inclusief 18.9.1.
Interpretaties
De kwetsbaarheden omvatten verschillende Denial of Service (DoS) en beveiligingsproblemen die konden worden misbruikt door zowel geauthenticeerde als ongeauthenticeerde gebruikers. Dit omvatte het creëren van speciaal vervaardigde triggers via de GitLab API, het versturen van speciaal vervaardigde bestanden naar de container registry, en het injecteren van scripts in de Mermaid sandbox UI. De kwetsbaarheden beïnvloeden de beschikbaarheid van de service en de integriteit van de configuraties binnen de CI/CD-processen van GitLab.
Oplossingen
GitLab heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans
medium
Schade
high
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-288
Authentication Bypass Using an Alternate Path or Channel
CWE-770
Allocation of Resources Without Limits or Throttling
CWE-862
Missing Authorization
CWE-1284
Improper Validation of Specified Quantity in Input
CWE-1333
Inefficient Regular Expression Complexity
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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
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    "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 heeft kwetsbaarheden verholpen in versies 9.0 tot maar niet inclusief 18.7.5, 18.8 tot maar niet inclusief 18.8.5, en 18.9 tot maar niet inclusief 18.9.1.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden omvatten verschillende Denial of Service (DoS) en beveiligingsproblemen die konden worden misbruikt door zowel geauthenticeerde als ongeauthenticeerde gebruikers. Dit omvatte het cre\u00ebren van speciaal vervaardigde triggers via de GitLab API, het versturen van speciaal vervaardigde bestanden naar de container registry, en het injecteren van scripts in de Mermaid sandbox UI. De kwetsbaarheden be\u00efnvloeden de beschikbaarheid van de service en de integriteit van de configuraties binnen de CI/CD-processen van GitLab.",
        "title": "Interpretaties"
      },
      {
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        "text": "Authentication Bypass Using an Alternate Path or Channel",
        "title": "CWE-288"
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      {
        "category": "general",
        "text": "Allocation of Resources Without Limits or Throttling",
        "title": "CWE-770"
      },
      {
        "category": "general",
        "text": "Missing Authorization",
        "title": "CWE-862"
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      {
        "category": "general",
        "text": "Improper Validation of Specified Quantity in Input",
        "title": "CWE-1284"
      },
      {
        "category": "general",
        "text": "Inefficient Regular Expression Complexity",
        "title": "CWE-1333"
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    ],
    "publisher": {
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      "name": "Nationaal Cyber Security Centrum",
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        "url": "https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/"
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    ],
    "title": "Kwetsbaarheden verholpen in GitLab",
    "tracking": {
      "current_release_date": "2026-02-27T07:15:18.318821Z",
      "generator": {
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      },
      "notes": [
        {
          "category": "other",
          "text": "Allocation of Resources Without Limits or Throttling",
          "title": "CWE-770"
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        {
          "category": "description",
          "text": "GitLab addressed a Denial of Service vulnerability affecting versions 9.0 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1, exploitable by authenticated users with specific access via specially crafted CI triggers through the API.",
          "title": "Summary"
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          "products": [
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      "title": "CVE-2025-3525"
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      "cwe": {
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          "title": "Summary"
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          "category": "other",
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          "products": [
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      },
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        {
          "category": "other",
          "text": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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          "category": "description",
          "text": "GitLab addressed a security vulnerability in versions 16.2 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1 that allowed unauthenticated users to inject arbitrary scripts into the Mermaid sandbox UI.",
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        "name": "Inefficient Regular Expression Complexity"
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          "category": "other",
          "text": "Inefficient Regular Expression Complexity",
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        {
          "category": "description",
          "text": "GitLab addressed a vulnerability in versions 9.2 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1 that allowed unauthenticated users to cause a regular expression denial of service via crafted input to a merge request endpoint.",
          "title": "Summary"
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          "products": [
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      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
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        {
          "category": "other",
          "text": "Allocation of Resources Without Limits or Throttling",
          "title": "CWE-770"
        },
        {
          "category": "description",
          "text": "GitLab addressed a Denial of Service vulnerability affecting versions 14.4 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1, exploitable via unauthenticated specially crafted requests to the Jira events endpoint.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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        {
          "category": "self",
          "summary": "CVE-2026-1662 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-1662.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
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      ],
      "title": "CVE-2026-1662"
    },
    {
      "cve": "CVE-2026-1725",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "notes": [
        {
          "category": "other",
          "text": "Allocation of Resources Without Limits or Throttling",
          "title": "CWE-770"
        },
        {
          "category": "description",
          "text": "GitLab addressed a denial of service vulnerability in versions prior to 18.9.1, exploitable by unauthenticated users through specially crafted requests to a CI jobs API endpoint.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-1725 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-1725.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
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      ],
      "title": "CVE-2026-1725"
    },
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      "cwe": {
        "id": "CWE-288",
        "name": "Authentication Bypass Using an Alternate Path or Channel"
      },
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        {
          "category": "other",
          "text": "Authentication Bypass Using an Alternate Path or Channel",
          "title": "CWE-288"
        },
        {
          "category": "description",
          "text": "GitLab addressed a security vulnerability in GitLab EE versions 17.11 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1 that allowed users with Developer roles to improperly modify protected Conan packages.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-1747 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-1747.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-1747"
    },
    {
      "cve": "CVE-2026-2845",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "notes": [
        {
          "category": "other",
          "text": "Allocation of Resources Without Limits or Throttling",
          "title": "CWE-770"
        },
        {
          "category": "description",
          "text": "A denial of service vulnerability exists in GitLab CE/EE versions 11.2 to before 18.7.5, 18.8 to before 18.8.5, and 18.9 to before 18.9.1, exploitable via the Bitbucket Server import endpoint with repeated large responses by an authenticated user.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-2845 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-2845.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-2845"
    }
  ]
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

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.