CVE-2021-47906 (GCVE-0-2021-47906)
Vulnerability from cvelistv5 – Published: 2026-01-23 16:47 – Updated: 2026-03-05 01:29
VLAI
EPSS
VEX
Title
BloofoxCMS 0.5.2.1 - 'text' Stored Cross Site Scripting
Summary
BloofoxCMS 0.5.2.1 contains a stored cross-site scripting vulnerability in the articles text parameter that allows authenticated attackers to inject malicious scripts. Attackers can insert malicious javascript payloads in the text field to execute scripts and potentially steal authenticated users' cookies.
Severity
6.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-23 20:56 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49492 | exploit |
| https://www.bloofox.com/ | product |
| https://github.com/alexlang24/bloofoxCMS/releases | product |
| https://www.vulncheck.com/advisories/bloofoxcms-t… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| BloofoxCMS | BloofoxCMS |
Affected:
0.5.1.0 - 0.5.2.1
cpe:2.3:a:bloofox:bloofoxcms:0.5.2.1:*:*:*:*:*:*:* |
Date Public
2020-12-18 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47906",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-23T20:56:19.832235Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-23T21:44:13.132Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49492"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "BloofoxCMS",
"vendor": "BloofoxCMS",
"versions": [
{
"status": "affected",
"version": "0.5.1.0 - 0.5.2.1"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bloofox:bloofoxcms:0.5.2.1:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "LiPeiYi"
}
],
"datePublic": "2020-12-18T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "BloofoxCMS 0.5.2.1 contains a stored cross-site scripting vulnerability in the articles text parameter that allows authenticated attackers to inject malicious scripts. Attackers can insert malicious javascript payloads in the text field to execute scripts and potentially steal authenticated users\u0027 cookies."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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": "2026-03-05T01:29:13.068Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-49492",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49492"
},
{
"name": "Official Vendor Homepage",
"tags": [
"product"
],
"url": "https://www.bloofox.com/"
},
{
"name": "BloofoxCMS Software Releases",
"tags": [
"product"
],
"url": "https://github.com/alexlang24/bloofoxCMS/releases"
},
{
"name": "VulnCheck Advisory: BloofoxCMS 0.5.2.1 - \u0027text\u0027 Stored Cross Site Scripting",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/bloofoxcms-text-stored-cross-site-scripting"
}
],
"title": "BloofoxCMS 0.5.2.1 - \u0027text\u0027 Stored Cross Site Scripting",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2021-47906",
"datePublished": "2026-01-23T16:47:44.644Z",
"dateReserved": "2026-01-18T12:35:05.177Z",
"dateUpdated": "2026-03-05T01:29:13.068Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-47906",
"date": "2026-11-04",
"epss": "0.0023",
"percentile": "0.13882"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "BloofoxCMS",
"vendor": "BloofoxCMS",
"versions": [
{
"status": "affected",
"version": "0.5.1.0 - 0.5.2.1"
}
]
}
],
"source": "disclosure@vulncheck.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "BloofoxCMS 0.5.2.1 contains a stored cross-site scripting vulnerability in the articles text parameter that allows authenticated attackers to inject malicious scripts. Attackers can insert malicious javascript payloads in the text field to execute scripts and potentially steal authenticated users\u0027 cookies."
},
{
"lang": "es",
"value": "BloofoxCMS 0.5.2.1 contiene una vulnerabilidad de cross-site scripting almacenado en el par\u00e1metro de texto de los art\u00edculos que permite a atacantes autenticados inyectar scripts maliciosos. Los atacantes pueden insertar cargas \u00fatiles de javascript maliciosas en el campo de texto para ejecutar scripts y potencialmente robar las cookies de usuarios autenticados."
}
],
"id": "CVE-2021-47906",
"lastModified": "2026-06-17T04:18:43.963",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.1,
"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": 5.1,
"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": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "disclosure@vulncheck.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-47906",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-23T20:56:19.832235Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-01-23T17:16:04.383",
"references": [
{
"source": "disclosure@vulncheck.com",
"url": "https://github.com/alexlang24/bloofoxCMS/releases"
},
{
"source": "disclosure@vulncheck.com",
"url": "https://www.bloofox.com/"
},
{
"source": "disclosure@vulncheck.com",
"url": "https://www.exploit-db.com/exploits/49492"
},
{
"source": "disclosure@vulncheck.com",
"url": "https://www.vulncheck.com/advisories/bloofoxcms-text-stored-cross-site-scripting"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"url": "https://www.exploit-db.com/exploits/49492"
}
],
"sourceIdentifier": "disclosure@vulncheck.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "disclosure@vulncheck.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T13:09:22+00:00",
"cve": "CVE-2021-47906",
"id": "CVE-2021-47906",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "BloofoxCMS 0.5.2.1 - \u0027text\u0027 Stored Cross Site Scripting",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47906.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47906",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-23T20:56:19.832235Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-23T20:56:45.410Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49492"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "BloofoxCMS",
"vendor": "BloofoxCMS",
"versions": [
{
"status": "affected",
"version": "0.5.1.0 - 0.5.2.1"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "LiPeiYi"
}
],
"datePublic": "2020-12-18T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "BloofoxCMS 0.5.2.1 contains a stored cross-site scripting vulnerability in the articles text parameter that allows authenticated attackers to inject malicious scripts. Attackers can insert malicious javascript payloads in the text field to execute scripts and potentially steal authenticated users\u0027 cookies."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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": "2026-01-23T16:47:44.644Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-49492",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49492"
},
{
"name": "Official Vendor Homepage",
"tags": [
"product"
],
"url": "https://www.bloofox.com/"
},
{
"name": "BloofoxCMS Software Releases",
"tags": [
"product"
],
"url": "https://github.com/alexlang24/bloofoxCMS/releases"
},
{
"name": "VulnCheck Advisory: BloofoxCMS 0.5.2.1 - \u0027text\u0027 Stored Cross Site Scripting",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/bloofoxcms-text-stored-cross-site-scripting"
}
],
"title": "BloofoxCMS 0.5.2.1 - \u0027text\u0027 Stored Cross Site Scripting",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2021-47906",
"datePublished": "2026-01-23T16:47:44.644Z",
"dateReserved": "2026-01-18T12:35:05.177Z",
"dateUpdated": "2026-01-23T21:44:13.132Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
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.