Vulnerability-Lookup

GHSA-P8PR-442Q-QF8G

Vulnerability from github – Published: 2026-07-14 15:32 – Updated: 2026-08-31 19:53

Summary

Duplicate Advisory: TYPO3-CORE-SA-2026-020: TYPO3 CMS - Unrestricted File Upload in Form Framework

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-mfqj-cqv3-h7xw. This link is maintained to preserve external references.

Original Description

Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.5.

Severity

6.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-form"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.2.0"
            },
            {
              "fixed": "14.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-351"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-31T19:53:50Z",
    "nvd_published_at": "2026-07-14T13:18:16Z",
    "severity": "MODERATE"
  },
  "details": "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of\u00a0GHSA-mfqj-cqv3-h7xw. This link is maintained to preserve external references.\n\n## Original Description\n\nUsers were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.5.",
  "id": "GHSA-p8pr-442q-qf8g",
  "modified": "2026-08-31T19:53:50Z",
  "published": "2026-07-14T15:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15305"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/817ad41cc9dd28aac0fc4d0fe16fc25d46dd554a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/commit/cfda21050398eb145211a4fa6f9988f10e43e10b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-form/CVE-2026-15305.yaml"
    },
    {
      "type": "WEB",
      "url": "https://news.typo3.com/security/advisory/typo3-core-sa-2026-020"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-020"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Duplicate Advisory: TYPO3-CORE-SA-2026-020: TYPO3 CMS - Unrestricted File Upload in Form Framework",
  "withdrawn": "2026-08-31T19:53:50Z"
}

CVE-2026-15305 (GCVE-0-2026-15305)

Vulnerability from cvelistv5 – Published: 2026-07-14 12:45 – Updated: 2026-07-15 12:26

Title

TYPO3 CMS - Unrestricted File Upload in Form Framework

Summary

Severity

6.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-14 13:26 UTC

CWE

CWE-351 - Insufficient Type Distinction

Assigner

TYPO3 mitre root

References

3 references

URL	Tags
https://typo3.org/security/advisory/typo3-core-sa…	vendor-advisory
https://github.com/TYPO3/typo3/commit/817ad41cc9d…	patch
https://github.com/TYPO3/typo3/commit/cfda2105039…	patch

Impacted products

1 product

Vendor	Product	Version
TYPO3	TYPO3 CMS	Affected: 14.2.0 , < 14.3.5 (semver) cpe:2.3:a:typo3:typo3::::::::

Credits

Josua Vogel Oliver Hader

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15305",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T13:26:13.647808Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T13:26:21.743Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://packagist.org",
          "defaultStatus": "unaffected",
          "modules": [
            "Form Framework"
          ],
          "packageName": "typo3/cms-form",
          "product": "TYPO3 CMS",
          "repo": "https://github.com/TYPO3/typo3",
          "vendor": "TYPO3",
          "versions": [
            {
              "lessThan": "14.3.5",
              "status": "affected",
              "version": "14.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "14.3.5",
                  "versionStartIncluding": "14.2.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
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        }
      ],
      "credits": [
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          "lang": "en",
          "type": "remediation developer",
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        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Oliver Hader"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Users were able to upload files with arbitrary MIME types to forms using \u003ccode\u003eFileUpload\u003c/code\u003e or \u003ccode\u003eImageUpload\u003c/code\u003e elements with \u003ccode\u003eallowedMimeTypes\u003c/code\u003e configured. The restriction was not enforced server-side because the \u003ccode\u003eMimeTypeValidator\u003c/code\u003e was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.4."
            }
          ],
          "value": "Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.4."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-351",
              "description": "CWE-351 Insufficient Type Distinction",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T12:26:56.912Z",
        "orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
        "shortName": "TYPO3"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-020"
        },
        {
          "name": "Git commit of main branch",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/TYPO3/typo3/commit/817ad41cc9dd28aac0fc4d0fe16fc25d46dd554a"
        },
        {
          "name": "Git commit of 14.3 branch",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/TYPO3/typo3/commit/cfda21050398eb145211a4fa6f9988f10e43e10b"
        }
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "TYPO3 CMS - Unrestricted File Upload in Form Framework",
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  "cveMetadata": {
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    "assignerShortName": "TYPO3",
    "cveId": "CVE-2026-15305",
    "datePublished": "2026-07-14T12:45:10.996Z",
    "dateReserved": "2026-07-09T16:25:43.306Z",
    "dateUpdated": "2026-07-15T12:26:56.912Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.