Vulnerability-Lookup

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

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.

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 CNA under the mitre root

CNA scorecard B 82/100 over 74 records in the last 180 days details

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	CPE status
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

To clipboard

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}

CERTFR-2026-AVI-1036

Vulnerability from certfr_avis - Published: 2026-08-18 - Updated: 2026-08-18

De multiples vulnérabilités ont été découvertes dans Typo3. Elles permettent à un attaquant de provoquer un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Typo3	Typo3	typo3 versions 13.x antérieures à 13.4.34
	Typo3	Typo3	typo3 versions 14.x antérieures à 14.3.6

References

Title

Publication Time

FKIE_CVE-2026-15305

Vulnerability from fkie_nvd - Published: 2026-07-14 13:18 - Updated: 2026-10-24 21:10

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

Summary

References

	URL	Tags
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/817ad41cc9dd28aac0fc4d0fe16fc25d46dd554a
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://github.com/TYPO3/typo3/commit/cfda21050398eb145211a4fa6f9988f10e43e10b
	f4fb688c-4412-4426-b4b8-421ecf27b14a	https://typo3.org/security/advisory/typo3-core-sa-2026-020

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "lang": "es",
      "value": "Los usuarios pudieron subir archivos con tipos MIME arbitrarios a formularios usando elementos FileUpload o ImageUpload con allowedMimeTypes configurados. La restricci\u00f3n no se aplic\u00f3 en el lado del servidor porque el MimeTypeValidator se registr\u00f3 durante la construcci\u00f3n del formulario antes de que se aplicaran las propiedades concretas de definici\u00f3n del formulario, lo que result\u00f3 en que el validador nunca se a\u00f1adiera a la tuber\u00eda de procesamiento. Este problema afecta a las versiones 14.2.0-14.3.4 de TYPO3 CMS."
    }
  ],
  "id": "CVE-2026-15305",
  "lastModified": "2026-10-24T21:10:00.130",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.3,
          "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": "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/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": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-15305",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-14T13:26:13.647808Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-14T13:18:16.270",
  "references": [
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://github.com/TYPO3/typo3/commit/817ad41cc9dd28aac0fc4d0fe16fc25d46dd554a"
    },
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://github.com/TYPO3/typo3/commit/cfda21050398eb145211a4fa6f9988f10e43e10b"
    },
    {
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2026-020"
    }
  ],
  "sourceIdentifier": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-351"
        }
      ],
      "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
      "type": "Secondary"
    }
  ]
}

GHSA-MFQJ-CQV3-H7XW

Vulnerability from github – Published: 2026-08-31 19:53 – Updated: 2026-08-31 19:53

Summary

TYPO3 CMS - Unrestricted File Upload in Form Framework

Details

Problem

Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured - uploading PHP files was not possible. 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.

Solution

Update to TYPO3 version 14.3.5 LTS that fixes the problem described.

Credits

Thanks to Sébastien Convers for reporting this issue, and to Josua Vogel and Oliver Hader for fixing it.

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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 14.3.4"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "typo3/cms-form"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.2.0"
            },
            {
              "fixed": "14.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-15305"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-351"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-31T19:53:59Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Problem\nUsers were able to upload files with arbitrary MIME types to forms using _FileUpload_ or _ImageUpload_ elements with _allowedMimeTypes_ configured - uploading PHP files was **not** possible. 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.\n\n### Solution\nUpdate to TYPO3 version 14.3.5 LTS that fixes the problem described.\n\n### Credits\nThanks to S\u00e9bastien Convers for reporting this issue, and to Josua Vogel and Oliver Hader for fixing it.",
  "id": "GHSA-mfqj-cqv3-h7xw",
  "modified": "2026-08-31T19:53:59Z",
  "published": "2026-08-31T19:53:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TYPO3/typo3/security/advisories/GHSA-mfqj-cqv3-h7xw"
    },
    {
      "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": "PACKAGE",
      "url": "https://github.com/TYPO3/typo3"
    },
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "TYPO3 CMS - Unrestricted File Upload in Form Framework"
}

GHSA-P8PR-442Q-QF8G

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

Withdrawn 2026-08-31

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

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

Show details on source website

JSON

To clipboard

{
  "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"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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

CERTFR-2026-AVI-1036

Solutions

FKIE_CVE-2026-15305

GHSA-MFQJ-CQV3-H7XW

Problem

Solution

Credits

GHSA-P8PR-442Q-QF8G

Duplicate Advisory

Original Description

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour