Vulnerability-Lookup

CVE-2026-1355 (GCVE-0-2026-1355)

Vulnerability from cvelistv5 – Published: 2026-02-18 20:42 – Updated: 2026-02-20 19:36

Title

Missing Authorization Check in GitHub Enterprise Server Allows Unauthorized Uploads to Repository Migration Exports

Summary

A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user’s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim’s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim's GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program.

Severity ?

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L

CWE

CWE-862 - Missing Authorization

Assigner

GitHub_P

References

URL

Tags

	https://docs.github.com/en/enterprise-server@3.19…
	https://docs.github.com/en/enterprise-server@3.18…
	https://docs.github.com/en/enterprise-server@3.17…
	https://docs.github.com/en/enterprise-server@3.16…
	https://docs.github.com/en/enterprise-server@3.15…
	https://docs.github.com/en/enterprise-server@3.14…

Impacted products

	Vendor	Product	Version
	GitHub	Enterprise Server	Affected: 3.19.0 , ≤ 3.19.1 (semver) Affected: 3.18.0 , ≤ 3.18.4 (semver) Affected: 3.17.0 , ≤ 3.17.10 (semver) Affected: 3.16.0 , ≤ 3.16.13 (semver) Affected: 3.15.0 , ≤ 3.15.17 (semver) Affected: 3.14.0 , ≤ 3.14.22 (semver)

Credits

ahacker1

Show details on NVD website

JSON

To clipboard

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GHSA-2Q3J-WJ77-9934

Vulnerability from github – Published: 2026-02-18 21:31 – Updated: 2026-02-20 00:31

Details

Severity ?

6.5 (Medium)


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

6.0 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L

Show details on source website

JSON

To clipboard

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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-18T21:16:23Z",
    "severity": "MODERATE"
  },
  "details": "A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user\u2019s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim\u2019s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim\u0027s GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program.",
  "id": "GHSA-2q3j-wj77-9934",
  "modified": "2026-02-20T00:31:52Z",
  "published": "2026-02-18T21:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1355"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.23"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.18"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.14"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

FKIE_CVE-2026-1355

Vulnerability from fkie_nvd - Published: 2026-02-18 21:16 - Updated: 2026-02-19 22:08

Severity ?

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

Summary

References

URL	Tags
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.23	Product, Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.18	Product, Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.14	Product, Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11	Product, Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5	Product, Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2	Product, Release Notes

Impacted products

Vendor	Product	Version
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BEA55C32-050E-43E6-A333-DAB8081BEA39",
              "versionEndExcluding": "3.14.23",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ED4B65C8-B789-4241-B6A8-7DEA48362FE5",
              "versionEndExcluding": "3.15.18",
              "versionStartIncluding": "3.15.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "46E1F973-5D32-4EB4-ABF0-758153BE97BD",
              "versionEndExcluding": "3.16.14",
              "versionStartIncluding": "3.16.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90147B72-EECF-4EB8-82D2-A3F98D0223A9",
              "versionEndExcluding": "3.17.11",
              "versionStartIncluding": "3.17.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7172422-332C-4454-85A3-551BBAC1A59C",
              "versionEndExcluding": "3.18.5",
              "versionStartIncluding": "3.18.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D8AE9F21-7596-446E-99B8-F09A230F173A",
              "versionEndExcluding": "3.19.2",
              "versionStartIncluding": "3.19.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Missing Authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to upload unauthorized content to another user\u2019s repository migration export due to a missing authorization check in the repository migration upload endpoint. By supplying the migration identifier, an attacker could overwrite or replace a victim\u2019s migration archive, potentially causing victims to download attacker-controlled repository data during migration restores or automated imports. An attacker would require authentication to the victim\u0027s GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. This vulnerability was reported via the GitHub Bug Bounty program."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad de falta de autorizaci\u00f3n en GitHub Enterprise Server que permit\u00eda a un atacante cargar contenido no autorizado a la exportaci\u00f3n de migraci\u00f3n de repositorio de otro usuario debido a una falta de verificaci\u00f3n de autorizaci\u00f3n en el endpoint de carga de migraci\u00f3n de repositorio. Al proporcionar el identificador de migraci\u00f3n, un atacante podr\u00eda sobrescribir o reemplazar el archivo de migraci\u00f3n de una v\u00edctima, lo que podr\u00eda hacer que las v\u00edctimas descargaran datos de repositorio controlados por el atacante durante las restauraciones de migraci\u00f3n o importaciones automatizadas. Un atacante requerir\u00eda autenticaci\u00f3n a la instancia de GitHub Enterprise Server de la v\u00edctima. Esta vulnerabilidad afect\u00f3 a todas las versiones de GitHub Enterprise Server anteriores a la 3.20 y fue corregida en las versiones 3.19.2, 3.18.5, 3.17.11, 3.16.14, 3.15.18, 3.14.23. Esta vulnerabilidad fue reportada a trav\u00e9s del programa GitHub Bug Bounty."
    }
  ],
  "id": "CVE-2026-1355",
  "lastModified": "2026-02-19T22:08:57.277",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.0,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "product-cna@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-18T21:16:23.460",
  "references": [
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.23"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.18"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.14"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2"
    }
  ],
  "sourceIdentifier": "product-cna@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "product-cna@github.com",
      "type": "Secondary"
    }
  ]
}

NCSC-2026-0067

Vulnerability from csaf_ncscnl - Published: 2026-02-20 10:13 - Updated: 2026-02-20 10:13

Summary

Kwetsbaarheden verholpen in GitHub Enterprise Server

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

GitHub heeft kwetsbaarheden verholpen in GitHub Enterprise Server (Specifiek voor versies vóór 3.20, 3.19.2, 3.18.5 en 3.17.11).

Interpretaties

De eerste kwetsbaarheid betreft een autorisatieprobleem dat het mogelijk maakte voor aanvallers om ongeautoriseerde pull-requests samen te voegen in repositories die fork-ondersteuning bieden. De tweede kwetsbaarheid betreft een ontbrekende autorisatie die aanvallers in staat stelde om ongeautoriseerde inhoud te uploaden naar de migratie-export van een andere gebruiker. Beide kwetsbaarheden zijn opgelost in de genoemde versies.

Oplossingen

GitHub heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Kans

medium

Schade

high

CWE-862

Missing Authorization

CWE-863

Incorrect Authorization

JSON

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": "GitHub heeft kwetsbaarheden verholpen in GitHub Enterprise Server (Specifiek voor versies v\u00f3\u00f3r 3.20, 3.19.2, 3.18.5 en 3.17.11).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De eerste kwetsbaarheid betreft een autorisatieprobleem dat het mogelijk maakte voor aanvallers om ongeautoriseerde pull-requests samen te voegen in repositories die fork-ondersteuning bieden. De tweede kwetsbaarheid betreft een ontbrekende autorisatie die aanvallers in staat stelde om ongeautoriseerde inhoud te uploaden naar de migratie-export van een andere gebruiker. Beide kwetsbaarheden zijn opgelost in de genoemde versies.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "GitHub heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Missing Authorization",
        "title": "CWE-862"
      },
      {
        "category": "general",
        "text": "Incorrect Authorization",
        "title": "CWE-863"
      }
    ],
    "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.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2"
      }
    ],
    "title": "Kwetsbaarheden verholpen in GitHub Enterprise Server",
    "tracking": {
      "current_release_date": "2026-02-20T10:13:39.540778Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0067",
      "initial_release_date": "2026-02-20T10:13:39.540778Z",
      "revision_history": [
        {
          "date": "2026-02-20T10:13:39.540778Z",
          "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": "Enterprise Server"
          }
        ],
        "category": "vendor",
        "name": "GitHub"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-2"
                }
              }
            ],
            "category": "product_name",
            "name": "GitHub Enterprise"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-1999",
      "cwe": {
        "id": "CWE-863",
        "name": "Incorrect Authorization"
      },
      "notes": [
        {
          "category": "other",
          "text": "Incorrect Authorization",
          "title": "CWE-863"
        },
        {
          "category": "description",
          "text": "An authorization vulnerability in GitHub Enterprise Server prior to versions 3.19.2, 3.18.5, and 3.17.11 allowed unauthorized pull requests to be merged into repositories, resolved through the GitHub Bug Bounty program.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:L/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-1999 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-1999.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:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2"
          ]
        }
      ],
      "title": "CVE-2026-1999"
    },
    {
      "cve": "CVE-2026-1355",
      "cwe": {
        "id": "CWE-862",
        "name": "Missing Authorization"
      },
      "notes": [
        {
          "category": "other",
          "text": "Missing Authorization",
          "title": "CWE-862"
        },
        {
          "category": "description",
          "text": "A Missing Authorization vulnerability in GitHub Enterprise Server prior to version 3.20 allowed unauthorized content uploads to user repository migration exports, which was addressed in later updates.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-1355 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-1355.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:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2"
          ]
        }
      ],
      "title": "CVE-2026-1355"
    }
  ]
}

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.

Action not permitted

CVE-2026-1355 (GCVE-0-2026-1355)

GHSA-2Q3J-WJ77-9934

FKIE_CVE-2026-1355

NCSC-2026-0067

Tags

Sightings

Nomenclature