Vulnerability-Lookup

GHSA-V6F4-JWV9-682W

Vulnerability from github – Published: 2024-01-04 18:30 – Updated: 2024-01-04 20:10

Summary

class.upload.php allows cross-site scripting attacks via uploaded files

Details

As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used.

Developers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension.

The README has been updated to include these guidelines.

Severity

6.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "verot/class.upload.php"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-6551"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-434"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-04T20:10:32Z",
    "nvd_published_at": "2024-01-04T16:15:09Z",
    "severity": "MODERATE"
  },
  "details": "As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. \n\n\nDevelopers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. \n\n\nThe README has been updated to include these guidelines.\n\n\n",
  "id": "GHSA-v6f4-jwv9-682w",
  "modified": "2024-01-04T20:10:32Z",
  "published": "2024-01-04T18:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6551"
    },
    {
      "type": "WEB",
      "url": "https://github.com/verot/class.upload.php/commit/befbccc2330b0ccb148fc87495896bd7b57f8c57"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2024/01/CVE-2023-6551"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2024/01/CVE-2023-6551"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/verot/class.upload.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "class.upload.php allows cross-site scripting attacks via uploaded files"
}

CVE-2023-6551 (GCVE-0-2023-6551)

Vulnerability from cvelistv5 – Published: 2024-01-04 16:04 – Updated: 2025-06-03 14:42

Title

Stored XSS in class.upload.php

Summary

As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. Developers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. The README has been updated to include these guidelines.

Severity

5.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-08 20:16 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

CERT-PL ENISA root

References

2 references

URL	Tags
https://cert.pl/posts/2024/01/CVE-2023-6551	third-party-advisory
https://cert.pl/en/posts/2024/01/CVE-2023-6551	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
class.upload.php	class.upload.php	Affected: 0 , ≤ * (semver)

Credits

Krzysztof Zając (CERT.PL)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:35:14.672Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://cert.pl/posts/2024/01/CVE-2023-6551"
          },
          {
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://cert.pl/en/posts/2024/01/CVE-2023-6551"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-6551",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-08T20:16:15.657075Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-434",
                "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T14:42:21.494Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "class.upload.php",
          "repo": "https://github.com/verot/class.upload.php",
          "vendor": "class.upload.php",
          "versions": [
            {
              "lessThanOrEqual": "*",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Krzysztof Zaj\u0105c (CERT.PL)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cdiv\u003eAs a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. \u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eDevelopers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. \u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThe README has been updated to include these guidelines.\u003cbr\u003e\u003c/div\u003e"
            }
          ],
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        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-592 Stored XSS"
            }
          ]
        },
        {
          "capecId": "CAPEC-209",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-209 XSS Using MIME Type Mismatch"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-434",
              "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-10T15:36:10.697Z",
        "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
        "shortName": "CERT-PL"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/posts/2024/01/CVE-2023-6551"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/en/posts/2024/01/CVE-2023-6551"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Stored XSS in class.upload.php",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
    "assignerShortName": "CERT-PL",
    "cveId": "CVE-2023-6551",
    "datePublished": "2024-01-04T16:04:34.995Z",
    "dateReserved": "2023-12-06T11:18:59.869Z",
    "dateUpdated": "2025-06-03T14:42:21.494Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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GHSA-V6F4-JWV9-682W

CVE-2023-6551 (GCVE-0-2023-6551)

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