GHSA-JMPX-686V-C3WX

Vulnerability from github – Published: 2025-01-03 17:06 – Updated: 2025-03-06 18:21

Summary

PhpSpreadsheet allows unauthorized Reflected XSS in the constructor of the Downloader class

Details

Unauthorized Reflected XSS in the constructor of the `Downloader` class

Product: Phpspreadsheet Version: version 3.6.0 CWE-ID: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CVSS vector v.3.1: 8.2 (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N) CVSS vector v.4.0: 8.3 (AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L) Description: using the /vendor/phpoffice/phpspreadsheet/samples/download.php script, an attacker can perform a XSS-type attack Impact: execution of arbitrary JavaScript code in the browser Vulnerable component: the constructor of the Downloader class Exploitation conditions: an unauthorized user Mitigation: sanitization of the name and type variables Researcher: Aleksey Solovev (Positive Technologies)

Research

The researcher discovered zero-day vulnerability Unauthorized Reflected Cross-Site Scripting (XSS) (in the constructor of the Downloader class) in Phpspreadsheet.

The latest version (3.6.0) of the phpoffice/phpspreadsheet library was installed. The installation was carried out with the inclusion of examples.

Listing 1. Installing the phpoffice/phpspreadsheet library

$ composer require phpoffice/phpspreadsheet --prefer-source

The ./vendor/phpoffice/phpspreadsheet/samples/download.php file processes the GET parameters name and type.

fig1

Figure 1. The ./vendor/phpoffice/phpspreadsheet/samples/download.php file accepts GET parameters.

Consider the constructor of the Downloader class, where GET parameters are passed. Error is displayed without sanitization using GET parameters transmitted from the user.

fig2

Figure 2. Error is displayed without sanitization

When clicking on the following link, arbitrary JavaScript code will be executed.

Listing 2.

https://192.***.***.***/vendor/phpoffice/phpspreadsheet/samples/download.php?name=%3Cimg%20src=1%20onerror=alert()%3E&type=1

Demonstration of the execution of arbitrary JavaScript code.

fig3

Figure 3. Executing arbitrary JavaScript code

Credit

This vulnerability was discovered by Aleksey Solovev (Positive Technologies)

Severity

7.1 (High)


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

8.3 (High)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.29.6"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.29.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.1.5"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.3.4"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpexcel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-56365"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-03T17:06:05Z",
    "nvd_published_at": "2025-01-03T17:15:08Z",
    "severity": "HIGH"
  },
  "details": "# Unauthorized Reflected XSS in the constructor of the `Downloader` class\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\n**CVSS vector v.3.1**: 8.2 (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N)\n**CVSS vector v.4.0**: 8.3 (AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L)\n**Description**: using the `/vendor/phpoffice/phpspreadsheet/samples/download.php` script, an attacker can perform a XSS-type attack\n**Impact**: execution of arbitrary JavaScript code in the browser\n**Vulnerable component**: the constructor of the `Downloader` class\n**Exploitation conditions**: an unauthorized user\n**Mitigation**: sanitization of the `name` and `type` variables\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Unauthorized Reflected Cross-Site Scripting (XSS) (in the constructor of the `Downloader` class) in Phpspreadsheet.\n\nThe latest version (3.6.0) of the `phpoffice/phpspreadsheet` library was installed. The installation was carried out with the inclusion of examples.\n\n*Listing 1. Installing the `phpoffice/phpspreadsheet` library*\n```\n$ composer require phpoffice/phpspreadsheet --prefer-source\n```\n\nThe `./vendor/phpoffice/phpspreadsheet/samples/download.php` file processes the GET parameters `name` and `type`.\n\n![fig1](https://github.com/user-attachments/assets/78d5b3c7-e2ab-4487-98e2-a975f74a71c0)\n\n*Figure 1. The `./vendor/phpoffice/phpspreadsheet/samples/download.php` file accepts GET parameters.*\n\nConsider the constructor of the `Downloader` class, where GET parameters are passed. Error is displayed without sanitization using GET parameters transmitted from the user.\n\n![fig2](https://github.com/user-attachments/assets/00baf1f8-298c-4654-a3e4-b99cf8053eac)\n\n*Figure 2. Error is displayed without sanitization*\n\nWhen clicking on the following link, arbitrary JavaScript code will be executed.\n\n*Listing 2.*\n```\nhttps://192.***.***.***/vendor/phpoffice/phpspreadsheet/samples/download.php?name=%3Cimg%20src=1%20onerror=alert()%3E\u0026type=1\n```\n\nDemonstration of the execution of arbitrary JavaScript code.\n\n\u003cimg width=\"537\" alt=\"fig3\" src=\"https://github.com/user-attachments/assets/745d6e21-396f-4357-8ff8-e856adf15fee\" /\u003e\n\n*Figure 3. Executing arbitrary JavaScript code*\n\n\n# Credit\nThis vulnerability was discovered by **Aleksey Solovev (Positive Technologies)**",
  "id": "GHSA-jmpx-686v-c3wx",
  "modified": "2025-03-06T18:21:36Z",
  "published": "2025-01-03T17:06:05Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56365"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PhpSpreadsheet allows unauthorized Reflected XSS in the constructor of the Downloader class"
}

CVE-2024-56365 (GCVE-0-2024-56365)

Vulnerability from cvelistv5 – Published: 2025-01-03 16:56 – Updated: 2025-01-03 18:16

Title

PhpSpreadsheet vulnerable to unauthorized reflected XSS in the constructor of the Downloader class

Summary

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are vulnerable to unauthorized reflected cross-site scripting in the constructor of the `Downloader` class. Using the `/vendor/phpoffice/phpspreadsheet/samples/download.php` script, an attacker can perform a cross-site scripting attack. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.

Severity

8.3 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-03 18:16 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7886 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/PHPOffice/PhpSpreadsheet/secur…	x_refsource_CONFIRM
https://github.com/PHPOffice/PhpSpreadsheet/commi…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
PHPOffice	PhpSpreadsheet	Affected: >= 3.0.0, < 3.7.0 Affected: < 1.29.7 Affected: >= 2.0.0, < 2.1.6 Affected: >= 2.2.0, < 2.3.5

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JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-56365",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-03T18:16:35.970454Z",
                "version": "2.0.3"
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          "dateUpdated": "2025-01-03T18:16:40.533Z",
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          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "PhpSpreadsheet",
          "vendor": "PHPOffice",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.7.0"
            },
            {
              "status": "affected",
              "version": "\u003c 1.29.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.1.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.2.0, \u003c 2.3.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are vulnerable to unauthorized reflected cross-site scripting in the constructor of the `Downloader` class. Using the `/vendor/phpoffice/phpspreadsheet/samples/download.php` script, an attacker can perform a cross-site scripting attack. Versions  3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-03T17:06:13.709Z",
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      "references": [
        {
          "name": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx",
          "tags": [
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          ],
          "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx"
        },
        {
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          "tags": [
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        "advisory": "GHSA-jmpx-686v-c3wx",
        "discovery": "UNKNOWN"
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      "title": "PhpSpreadsheet vulnerable to unauthorized reflected XSS in the constructor of the Downloader class"
    }
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "cveId": "CVE-2024-56365",
    "datePublished": "2025-01-03T16:56:35.040Z",
    "dateReserved": "2024-12-20T17:34:56.867Z",
    "dateUpdated": "2025-01-03T18:16:40.533Z",
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}

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

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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.

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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.

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