github - ghsa-6jmr-r7p6-f5wr

GHSA-6JMR-R7P6-F5WR

Vulnerability from github – Published: 2025-04-29 21:31 – Updated: 2025-11-05 19:58

Summary

ShowDoc unrestricted file upload vulnerability

Details

An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution. This issue affects ShowDoc: before 2.8.7.

Severity ?

9.4 (Critical)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "showdoc/showdoc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-0520"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-30T17:31:58Z",
    "nvd_published_at": "2025-04-29T20:15:25Z",
    "severity": "CRITICAL"
  },
  "details": "An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution. This issue affects ShowDoc: before 2.8.7.",
  "id": "GHSA-6jmr-r7p6-f5wr",
  "modified": "2025-11-05T19:58:02Z",
  "published": "2025-04-29T21:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0520"
    },
    {
      "type": "WEB",
      "url": "https://github.com/star7th/showdoc/pull/1059"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/star7th/showdoc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585"
    },
    {
      "type": "WEB",
      "url": "https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ShowDoc unrestricted file upload vulnerability"
}

CVE-2025-0520 (GCVE-0-2025-0520)

Vulnerability from cvelistv5 – Published: 2025-04-29 19:35 – Updated: 2025-11-19 20:29

Title

ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution

Summary

Severity ?

9.4 (Critical)


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

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

VulnCheck

References

URL

Tags

	https://github.com/vulhub/vulhub/tree/master/show…	exploit
	https://github.com/star7th/showdoc/pull/1059	patchissue-tracking
	https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585	third-party-advisory
	https://www.vulncheck.com/advisories/showdoc-unau…	third-party-advisory

Impacted products

	Vendor	Product	Version
	ShowDoc	ShowDoc	Affected: 0 , < 2.8.7 (semver)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-0520",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-29T20:38:44.727309Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-29T20:41:34.177Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ShowDoc",
          "vendor": "ShowDoc",
          "versions": [
            {
              "lessThan": "2.8.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:showdoc:showdoc:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.8.7",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
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          ],
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          "capecId": "CAPEC-650",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-650 Upload a Web Shell to a Web Server"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
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            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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              "value": "GENERAL"
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        "dateUpdated": "2025-11-19T20:29:09.159Z",
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      "references": [
        {
          "tags": [
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          "url": "https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585"
        },
        {
          "tags": [
            "patch",
            "issue-tracking"
          ],
          "url": "https://github.com/star7th/showdoc/pull/1059"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rce"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "ShowDoc \u003c 2.8.7 Unauthenticated File Upload Remote Code Execution",
      "x_generator": {
        "engine": "vulncheck"
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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    "datePublished": "2025-04-29T19:35:37.829Z",
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}

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

GHSA-6JMR-R7P6-F5WR

CVE-2025-0520 (GCVE-0-2025-0520)

Tags

Sightings

Nomenclature