CVE-2021-47817 (GCVE-0-2021-47817)
Vulnerability from cvelistv5 – Published: 2026-01-21 17:27 – Updated: 2026-05-25 23:41
VLAI
EPSS
VEX
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
5.4 (Medium)
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
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
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47817",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-22T22:10:00.083662Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-22T22:10:12.762Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "OpenEMR",
"vendor": "OpenEMR Foundation, Inc.",
"versions": [
{
"status": "affected",
"version": "5.0.2.1"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:open-emr:openemr:5.0.2.1:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Hato0, BvThTrd"
}
],
"datePublic": "2020-08-07T00:00:00.000Z",
"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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"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"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-25T23:41:14.666Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-49784",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49784"
},
{
"name": "OpenEMR Official Website",
"tags": [
"product"
],
"url": "https://www.open-emr.org/"
},
{
"name": "OpenEMR 5.0.2.1 Download",
"tags": [
"product"
],
"url": "https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/download"
},
{
"name": "SonarSource Vulnerability Analysis",
"tags": [
"vendor-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"
},
{
"name": "Vulnerability Demonstration Video",
"tags": [
"technical-description"
],
"url": "https://www.youtube.com/watch?v=H8VWNwWgYJo\u0026feature=emb_logo"
},
{
"name": "VulnCheck Advisory: OpenEMR 5.0.2.1 - Remote Code Execution",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/openemr-remote-code-execution"
}
],
"title": "OpenEMR 5.0.2.1 - Remote Code Execution",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2021-47817",
"datePublished": "2026-01-21T17:27:33.562Z",
"dateReserved": "2026-01-14T17:11:19.896Z",
"dateUpdated": "2026-05-25T23:41:14.666Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-47817",
"date": "2026-09-18",
"epss": "0.00802",
"percentile": "0.55064"
},
"nvd": {
"cve": {
"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"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-05-26T02:12:49+00:00",
"cve": "CVE-2021-47817",
"id": "CVE-2021-47817",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "OpenEMR 5.0.2.1 - Remote Code Execution",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47817.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47817",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-22T22:10:00.083662Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-22T22:10:06.568Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "OpenEMR",
"vendor": "OpenEMR Foundation, Inc.",
"versions": [
{
"status": "affected",
"version": "5.0.2.1"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:open-emr:openemr:5.0.2.1:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Hato0, BvThTrd"
}
],
"datePublic": "2020-08-07T00:00:00.000Z",
"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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"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"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-25T23:41:14.666Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-49784",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49784"
},
{
"name": "OpenEMR Official Website",
"tags": [
"product"
],
"url": "https://www.open-emr.org/"
},
{
"name": "OpenEMR 5.0.2.1 Download",
"tags": [
"product"
],
"url": "https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/download"
},
{
"name": "SonarSource Vulnerability Analysis",
"tags": [
"vendor-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"
},
{
"name": "Vulnerability Demonstration Video",
"tags": [
"technical-description"
],
"url": "https://www.youtube.com/watch?v=H8VWNwWgYJo\u0026feature=emb_logo"
},
{
"name": "VulnCheck Advisory: OpenEMR 5.0.2.1 - Remote Code Execution",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/openemr-remote-code-execution"
}
],
"title": "OpenEMR 5.0.2.1 - Remote Code Execution",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2021-47817",
"datePublished": "2026-01-21T17:27:33.562Z",
"dateReserved": "2026-01-14T17:11:19.896Z",
"dateUpdated": "2026-05-25T23:41:14.666Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Loading…
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.
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.
Loading…
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.
Loading…