CVE-2021-21087 (GCVE-0-2021-21087)
Vulnerability from cvelistv5 – Published: 2021-04-15 13:54 – Updated: 2025-04-23 19:41Title
ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser
Summary
Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:13 UTC
CWE
- CWE-79 - Cross-site Scripting (XSS) (CWE-79)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/coldfus… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Adobe | ColdFusion |
Affected:
unspecified , ≤ 2016.16
(custom)
Affected: unspecified , ≤ 2018.10 (custom) Affected: unspecified , ≤ 2021.0.0.323925 (custom) Affected: unspecified , ≤ None (custom) |
guessed |
Date Public
2021-03-22 00:00
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 61b8d6a8-8044-4846-a3d8-1c9a346e329c
Exploited: Yes
Characteristics
Severity:
54.0
Timestamps
First Seen: 2023-10-18
Asserted: 2023-10-18
Last Seen: 2026-09-05
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Adobe / ColdFusion | Class: app-server | Severity: Medium (CVSS 5.4) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-09-05: 1
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 1 |
|---|---|
| Iot | no |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | app-server |
| 7D Avg | 0 |
| Vendor | Adobe |
| 30D Avg | 0 |
| 90D Avg | 0 |
| Product | ColdFusion |
| Cisa Kev | no |
| Connections | 1 |
| Observation Date | 2026-09-05 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 5.4 |
| Vulnerability Severity | Medium |
References
Created: 2026-07-01 05:54 UTC
| Updated: 2026-09-07 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7f7ef44f-ffc7-4314-99e7-a122d4d95837
Exploited: Yes
Timestamps
First Seen: 2025-07-26
Asserted: 2025-07-26
Scope
Notes: KEVIntel entry: ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser | Affected: Adobe / ColdFusion | CVSS: 5.4 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser |
| Vendor | Adobe |
| Product | ColdFusion |
| Added Date | 2025-07-26T00:00:00.000Z |
| Cvss Score | 5.4 |
| Epss Score | None |
| Cvss Severity | MEDIUM |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-23 11:12 UTC
| Updated: 2026-06-23 11:12 UTC
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T18:01:13.274Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-21087",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T13:13:20.119745Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-23T19:41:40.132Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ColdFusion",
"vendor": "Adobe",
"versions": [
{
"lessThanOrEqual": "2016.16",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "2018.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "2021.0.0.323925",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "None",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-03-22T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Cross-site Scripting (XSS) (CWE-79)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-06-28T12:41:42.000Z",
"orgId": "078d4453-3bcd-4900-85e6-15281da43538",
"shortName": "adobe"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@adobe.com",
"DATE_PUBLIC": "2021-03-22T23:00:00.000Z",
"ID": "CVE-2021-21087",
"STATE": "PUBLIC",
"TITLE": "ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "ColdFusion",
"version": {
"version_data": [
{
"version_affected": "\u003c=",
"version_value": "2016.16"
},
{
"version_affected": "\u003c=",
"version_value": "2018.10"
},
{
"version_affected": "\u003c=",
"version_value": "2021.0.0.323925"
},
{
"version_affected": "\u003c=",
"version_value": "None"
}
]
}
}
]
},
"vendor_name": "Adobe"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "Low",
"attackVector": "Network",
"availabilityImpact": "None",
"baseScore": 5.4,
"baseSeverity": "Medium",
"confidentialityImpact": "Low",
"integrityImpact": "Low",
"privilegesRequired": "Low",
"scope": "Changed",
"userInteraction": "Required",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Cross-site Scripting (XSS) (CWE-79)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html",
"refsource": "MISC",
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
]
},
"source": {
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
"assignerShortName": "adobe",
"cveId": "CVE-2021-21087",
"datePublished": "2021-04-15T13:54:29.883Z",
"dateReserved": "2020-12-18T00:00:00.000Z",
"dateUpdated": "2025-04-23T19:41:40.132Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-21087",
"date": "2026-09-20",
"epss": "0.37095",
"percentile": "0.98449"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:-:*:*:*:*:*:*",
"matchCriteriaId": "B262F442-FF7F-4CC0-A9C5-FFD0EDB08E38",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update1:*:*:*:*:*:*",
"matchCriteriaId": "9F3D7C8E-6695-44DF-AC9A-1AE09C46C529",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update10:*:*:*:*:*:*",
"matchCriteriaId": "449A07A6-1D7A-49CF-9316-5EAAFAF38956",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update11:*:*:*:*:*:*",
"matchCriteriaId": "C5265059-D9DD-44E6-B68C-81838BCA64C5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update12:*:*:*:*:*:*",
"matchCriteriaId": "A2277A67-562B-4185-AE5F-EB93563F16DF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update13:*:*:*:*:*:*",
"matchCriteriaId": "6C6E6735-A72F-4CC7-8239-CC96DEF4E5CA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update14:*:*:*:*:*:*",
"matchCriteriaId": "3BCED4DC-29A3-4EBB-9ADF-2C56075D7CA9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update15:*:*:*:*:*:*",
"matchCriteriaId": "1798CDA5-D0A5-4C92-AB36-1EA401BAA27D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update16:*:*:*:*:*:*",
"matchCriteriaId": "4CCB27FA-920A-4E77-B25B-12A725C46D90",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update2:*:*:*:*:*:*",
"matchCriteriaId": "12BAE66C-A745-4661-B5BB-7FC2C169CC82",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update3:*:*:*:*:*:*",
"matchCriteriaId": "E6EC92F3-1EF8-4820-9CD8-ECEA03D27A7B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update4:*:*:*:*:*:*",
"matchCriteriaId": "D7446D70-D616-4EC1-BC64-41CDE56EFEAE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update5:*:*:*:*:*:*",
"matchCriteriaId": "59453B01-EAAF-4291-B2C2-98835F5AFE80",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update6:*:*:*:*:*:*",
"matchCriteriaId": "63076ED8-FC30-40B1-99A7-D0069423A536",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update7:*:*:*:*:*:*",
"matchCriteriaId": "E4B4228E-6FBD-492A-8F93-30B1D6861C81",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update8:*:*:*:*:*:*",
"matchCriteriaId": "7D4F5639-F628-4163-BFBA-25B4E7B2DFDE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2016:update9:*:*:*:*:*:*",
"matchCriteriaId": "5BC3FFF1-A25A-4C15-9162-1DA58350DAFE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:-:*:*:*:*:*:*",
"matchCriteriaId": "3B54B2B0-B1E1-4B4E-A529-D0BD3B5DEEF3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update1:*:*:*:*:*:*",
"matchCriteriaId": "EDB126BF-E09D-4E58-A39F-1190407D1CAB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update10:*:*:*:*:*:*",
"matchCriteriaId": "8DDD85DF-69A0-476F-8365-CD67C75CF0CE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update2:*:*:*:*:*:*",
"matchCriteriaId": "59649177-81EE-43C3-BFA5-E56E65B486DF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update3:*:*:*:*:*:*",
"matchCriteriaId": "453B96ED-738A-4642-B461-C5216CF45CA3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update4:*:*:*:*:*:*",
"matchCriteriaId": "58D32489-627B-4E49-9329-8A3B8F8E4903",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update5:*:*:*:*:*:*",
"matchCriteriaId": "6D5860E1-D293-48FE-9796-058B78B2D571",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update6:*:*:*:*:*:*",
"matchCriteriaId": "9F9336CC-E38F-4BCB-83CD-805EC7FEF806",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update7:*:*:*:*:*:*",
"matchCriteriaId": "97964507-047A-4CC8-8D2B-0EA0C7F9BD50",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update8:*:*:*:*:*:*",
"matchCriteriaId": "82208628-F32A-4380-9B0F-DC8507E7701D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2018:update9:*:*:*:*:*:*",
"matchCriteriaId": "1563CE5E-A4F7-40A4-A050-BB96E332D8DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:adobe:coldfusion:2021.0.0.323925:*:*:*:*:*:*:*",
"matchCriteriaId": "DCC19A0A-E248-44E5-B401-B562F3CDB939",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction."
},
{
"lang": "es",
"value": "Las versiones de Adobe Coldfusion 2016 (actualizaci\u00f3n 16 y anteriores), 2018 (actualizaci\u00f3n 10 y anteriores) y 2021.0.0.323925 est\u00e1n afectadas por una vulnerabilidad de Neutralizaci\u00f3n inadecuada de la entrada durante la generaci\u00f3n de la p\u00e1gina web (\u0027Cross-site Scripting\u0027). Un atacante podr\u00eda abusar de esta vulnerabilidad para ejecutar c\u00f3digo JavaScript arbitrario en el contexto del usuario actual. La explotaci\u00f3n de este problema requiere la interacci\u00f3n del usuario"
}
],
"id": "CVE-2021-21087",
"lastModified": "2024-11-21T05:47:32.437",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 3.5,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
},
"exploitabilityScore": 2.3,
"impactScore": 2.7,
"source": "psirt@adobe.com",
"type": "Secondary"
}
],
"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": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-04-15T14:15:16.077",
"references": [
{
"source": "psirt@adobe.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
],
"sourceIdentifier": "psirt@adobe.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "psirt@adobe.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-29T04:51:20+00:00",
"cve": "CVE-2021-21087",
"id": "CVE-2021-21087",
"initial_release_date": "2021-03-22T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-21087.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T18:01:13.274Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-21087",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T13:13:20.119745Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-23T13:13:21.657Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ColdFusion",
"vendor": "Adobe",
"versions": [
{
"lessThanOrEqual": "2016.16",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "2018.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "2021.0.0.323925",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "None",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-03-22T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Cross-site Scripting (XSS) (CWE-79)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-06-28T12:41:42.000Z",
"orgId": "078d4453-3bcd-4900-85e6-15281da43538",
"shortName": "adobe"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@adobe.com",
"DATE_PUBLIC": "2021-03-22T23:00:00.000Z",
"ID": "CVE-2021-21087",
"STATE": "PUBLIC",
"TITLE": "ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "ColdFusion",
"version": {
"version_data": [
{
"version_affected": "\u003c=",
"version_value": "2016.16"
},
{
"version_affected": "\u003c=",
"version_value": "2018.10"
},
{
"version_affected": "\u003c=",
"version_value": "2021.0.0.323925"
},
{
"version_affected": "\u003c=",
"version_value": "None"
}
]
}
}
]
},
"vendor_name": "Adobe"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "Low",
"attackVector": "Network",
"availabilityImpact": "None",
"baseScore": 5.4,
"baseSeverity": "Medium",
"confidentialityImpact": "Low",
"integrityImpact": "Low",
"privilegesRequired": "Low",
"scope": "Changed",
"userInteraction": "Required",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Cross-site Scripting (XSS) (CWE-79)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html",
"refsource": "MISC",
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html"
}
]
},
"source": {
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
"assignerShortName": "adobe",
"cveId": "CVE-2021-21087",
"datePublished": "2021-04-15T13:54:29.883Z",
"dateReserved": "2020-12-18T00:00:00.000Z",
"dateUpdated": "2025-04-23T19:41:40.132Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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…