Vulnerability-Lookup

CVE-2021-47817 (GCVE-0-2021-47817)

Vulnerability from cvelistv5 – Published: 2026-01-21 17:27 – Updated: 2026-05-25 23:41

Title

OpenEMR 5.0.2.1 - Remote Code Execution

Summary

OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability in user profile parameters that authenticated attackers can chain with a file upload to achieve remote code execution. Attackers can exploit the vulnerability by crafting a malicious payload to download and execute a web shell, enabling remote command execution on the vulnerable OpenEMR instance.

Severity

4.8 (Medium)


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

5.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-22 22:10 UTC

CWE

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

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7797 records in the last 180 days details

References

6 references

URL	Tags
https://www.exploit-db.com/exploits/49784	exploit
https://www.open-emr.org/	product
https://sourceforge.net/projects/openemr/files/Op…	product
https://blog.sonarsource.com/openemr-5-0-2-1-comm…	vendor-advisory
https://www.youtube.com/watch?v=H8VWNwWgYJo&featu…	technical-description
https://www.vulncheck.com/advisories/openemr-remo…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
OpenEMR Foundation, Inc.	OpenEMR	Affected: 5.0.2.1 cpe:2.3:a:open-emr:openemr:5.0.2.1:::::::*

Date Public

2020-08-07 00:00

Credits

Hato0, BvThTrd

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2021-47817

Vulnerability from fkie_nvd - Published: 2026-01-21 18:16 - Updated: 2026-06-17 04:18

Severity

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Summary

References

URL	Tags
disclosure@vulncheck.com	https://blog.sonarsource.com/openemr-5-0-2-1-command-injection-vulnerability?utm_medium=cpc&utm_source=twitter&utm_campaign=openemr&utm_term=security&utm_content=tofu	Exploit, Patch, Third Party Advisory
disclosure@vulncheck.com	https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/download	Product
disclosure@vulncheck.com	https://www.exploit-db.com/exploits/49784	Exploit, Third Party Advisory, VDB Entry
disclosure@vulncheck.com	https://www.open-emr.org/	Product
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/openemr-remote-code-execution	Third Party Advisory
disclosure@vulncheck.com	https://www.youtube.com/watch?v=H8VWNwWgYJo&feature=emb_logo	Exploit

Impacted products

	Vendor	Product	Version
	open-emr	openemr	5.0.2.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OpenEMR",
          "vendor": "OpenEMR Foundation, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "5.0.2.1"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:open-emr:openemr:5.0.2.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "BCFA8AD2-1361-43D5-9580-A7F43B3390D5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability in user profile parameters that authenticated attackers can chain with a file upload to achieve remote code execution. Attackers can exploit the vulnerability by crafting a malicious payload to download and execute a web shell, enabling remote command execution on the vulnerable OpenEMR instance."
    },
    {
      "lang": "es",
      "value": "OpenEMR 5.0.2.1 contiene una vulnerabilidad de cross-site scripting que permite a atacantes autenticados inyectar JavaScript malicioso a trav\u00e9s de los par\u00e1metros del perfil de usuario. Los atacantes pueden explotar la vulnerabilidad creando una carga \u00fatil maliciosa para descargar y ejecutar una web shell, lo que permite la ejecuci\u00f3n remota de comandos en la instancia vulnerable de OpenEMR."
    }
  ],
  "id": "CVE-2021-47817",
  "lastModified": "2026-06-17T04:18:33.060",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 4.8,
          "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": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47817",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-22T22:10:00.083662Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-21T18:16:09.633",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://blog.sonarsource.com/openemr-5-0-2-1-command-injection-vulnerability?utm_medium=cpc\u0026utm_source=twitter\u0026utm_campaign=openemr\u0026utm_term=security\u0026utm_content=tofu"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Product"
      ],
      "url": "https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/download"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://www.exploit-db.com/exploits/49784"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Product"
      ],
      "url": "https://www.open-emr.org/"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/openemr-remote-code-execution"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit"
      ],
      "url": "https://www.youtube.com/watch?v=H8VWNwWgYJo\u0026feature=emb_logo"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-PV2R-F997-MJW4

Vulnerability from github – Published: 2026-01-21 18:30 – Updated: 2026-01-21 18:30

Details

OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript through user profile parameters. Attackers can exploit the vulnerability by crafting a malicious payload to download and execute a web shell, enabling remote command execution on the vulnerable OpenEMR instance.

Severity

5.4 (Medium)


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

4.8 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-47817"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-21T18:16:09Z",
    "severity": "MODERATE"
  },
  "details": "OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript through user profile parameters. Attackers can exploit the vulnerability by crafting a malicious payload to download and execute a web shell, enabling remote command execution on the vulnerable OpenEMR instance.",
  "id": "GHSA-pv2r-f997-mjw4",
  "modified": "2026-01-21T18:30:31Z",
  "published": "2026-01-21T18:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47817"
    },
    {
      "type": "WEB",
      "url": "https://blog.sonarsource.com/openemr-5-0-2-1-command-injection-vulnerability?utm_medium=cpc\u0026utm_source=twitter\u0026utm_campaign=openemr\u0026utm_term=security\u0026utm_content=tofu"
    },
    {
      "type": "WEB",
      "url": "https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/download"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/49784"
    },
    {
      "type": "WEB",
      "url": "https://www.open-emr.org"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openemr-remote-code-execution"
    },
    {
      "type": "WEB",
      "url": "https://www.youtube.com/watch?v=H8VWNwWgYJo\u0026feature=emb_logo"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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"
    }
  ]
}

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-2021-47817 (GCVE-0-2021-47817)

FKIE_CVE-2021-47817

GHSA-PV2R-F997-MJW4

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour