Vulnerability-Lookup

CVE-2026-1751 (GCVE-0-2026-1751)

Vulnerability from cvelistv5 – Published: 2026-02-02 09:04 – Updated: 2026-02-02 13:24

Title

Missing Authorization in GitLab

Summary

A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain conditions.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-02 13:24 UTC

CWE

CWE-862 - Missing Authorization

Assigner

GitLab mitre root

References

2 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/519340	issue-trackingpermissions-required
https://hackerone.com/reports/2980839	technical-descriptionexploitpermissions-required

Impacted products

1 product

Vendor	Product	Version	CPE status
GitLab	GitLab	Affected: 16.8 , < 18.5.0 (semver) cpe:2.3:a:gitlab:gitlab::::::::

Credits

Thanks [theluci](https://hackerone.com/theluci) for reporting this vulnerability through our HackerOne bug bounty program

Show details on NVD website

JSON

To clipboard

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bit-gitlab-2026-1751

Vulnerability from bitnami_vulndb

Published

2026-02-05 09:09

Modified

2026-09-08 08:34

Summary

Missing Authorization in GitLab

Details

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "gitlab",
        "purl": "pkg:bitnami/gitlab"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "16.8.0"
            },
            {
              "fixed": "18.5.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-1751"
  ],
  "database_specific": {
    "cpes": [
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      "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"
    ],
    "severity": "Low"
  },
  "details": "A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain conditions.",
  "id": "BIT-gitlab-2026-1751",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-02-05T09:09:05.467Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/519340"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/2980839"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1751"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Missing Authorization in GitLab"
}

FKIE_CVE-2026-1751

Vulnerability from fkie_nvd - Published: 2026-02-02 10:16 - Updated: 2026-06-17 10:16

Severity

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	cve@gitlab.com	https://gitlab.com/gitlab-org/gitlab/-/issues/519340	Exploit, Issue Tracking, Vendor Advisory
	cve@gitlab.com	https://hackerone.com/reports/2980839	Permissions Required

Impacted products

	Vendor	Product	Version
	gitlab	gitlab	*
	gitlab	gitlab	*

JSON

To clipboard

{
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      ],
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}

GHSA-3735-4FJF-VQ4Q

Vulnerability from github – Published: 2026-02-02 12:31 – Updated: 2026-02-02 12:31

Details

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

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  "affected": [],
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    "CVE-2026-1751"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-02T10:16:06Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain conditions.",
  "id": "GHSA-3735-4fjf-vq4q",
  "modified": "2026-02-02T12:31:14Z",
  "published": "2026-02-02T12:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1751"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/2980839"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/519340"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-1751 (CVE-2026-1751)

Vulnerability from osv_ubuntu – Published: 2026-02-02 10:16 – Updated: 2026-02-04 17:38 – Source website

Details

Severity

3.1 (Low)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-1751	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-1751	REPORT
	https://gitlab.com/gitlab-org/gitlab/-/issues/519340	REPORT
	https://hackerone.com/reports/2980839	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gitlab",
            "binary_version": "8.5.8+dfsg-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "gitlab",
        "purl": "pkg:deb/ubuntu/gitlab@8.5.8+dfsg-5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.4.3+dfsg-9",
        "8.4.3+dfsg-12",
        "8.5.8+dfsg-5"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain conditions.",
  "id": "UBUNTU-CVE-2026-1751",
  "modified": "2026-02-04T17:38:21Z",
  "published": "2026-02-02T10:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-1751"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-1751"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/519340"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/2980839"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-1751"
  ]
}

WID-SEC-W-2026-0286

Vulnerability from csaf_certbund - Published: 2026-02-02 23:00 - Updated: 2026-02-02 23:00

Summary

GitLab: Schwachstelle ermöglicht Manipulation von Dateien

Severity

Niedrig

Scope

1 vulnerability in this advisory, including CVE-2026-1751.

CVE-2026-1751

Known affected: 1 product

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-1751 (GCVE-0-2026-1751)

bit-gitlab-2026-1751

Vulnerability from bitnami_vulndb

FKIE_CVE-2026-1751

GHSA-3735-4FJF-VQ4Q

UBUNTU-CVE-2026-1751 (CVE-2026-1751)

WID-SEC-W-2026-0286

Tags

Sightings

Nomenclature

Related by attack behaviour