CVE-2020-7767 (GCVE-0-2020-7767)
Vulnerability from cvelistv5 – Published: 2020-11-11 10:20 – Updated: 2024-09-16 19:25
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service (ReDoS)
Summary
All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.
Severity
CWE
- Regular Expression Denial of Service (ReDoS)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | express-validators |
Affected:
0 , < unspecified
(custom)
|
Date Public
2020-11-11 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T09:41:01.565Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "express-validators",
"vendor": "n/a",
"versions": [
{
"lessThan": "unspecified",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Yeting Li"
}
],
"datePublic": "2020-11-11T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"exploitCodeMaturity": "PROOF_OF_CONCEPT",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"remediationLevel": "UNAVAILABLE",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 5,
"temporalSeverity": "MEDIUM",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:U/RC:C",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Regular Expression Denial of Service (ReDoS)",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-11-11T10:20:21.000Z",
"orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
"shortName": "snyk"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404"
}
],
"title": "Regular Expression Denial of Service (ReDoS)",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "report@snyk.io",
"DATE_PUBLIC": "2020-11-11T10:18:56.262903Z",
"ID": "CVE-2020-7767",
"STATE": "PUBLIC",
"TITLE": "Regular Expression Denial of Service (ReDoS)"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "express-validators",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_value": "0"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Yeting Li"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:U/RC:C",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Regular Expression Denial of Service (ReDoS)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404",
"refsource": "MISC",
"url": "https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
"assignerShortName": "snyk",
"cveId": "CVE-2020-7767",
"datePublished": "2020-11-11T10:20:21.655Z",
"dateReserved": "2020-01-21T00:00:00.000Z",
"dateUpdated": "2024-09-16T19:25:17.261Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-7767",
"date": "2026-07-17",
"epss": "0.01621",
"percentile": "0.73394"
},
"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:express-validators_project:express-validators:*:*:*:*:*:node.js:*:*\", \"matchCriteriaId\": \"B3D7A0CE-9CE9-41EE-AE0F-B1E4BD9034F8\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.\"}, {\"lang\": \"es\", \"value\": \"Todas las versiones de los validadores r\\u00e1pidos de paquetes son vulnerables a la Denegaci\\u00f3n de servicio de expresiones regulares (ReDoS) al validar URL no v\\u00e1lidas espec\\u00edficamente dise\\u00f1adas\"}]",
"id": "CVE-2020-7767",
"lastModified": "2024-11-21T05:37:45.890",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"report@snyk.io\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:N/I:N/A:P\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
"published": "2020-11-11T11:15:10.820",
"references": "[{\"url\": \"https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404\", \"source\": \"report@snyk.io\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}]",
"sourceIdentifier": "report@snyk.io",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-400\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2020-7767\",\"sourceIdentifier\":\"report@snyk.io\",\"published\":\"2020-11-11T11:15:10.820\",\"lastModified\":\"2024-11-21T05:37:45.890\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.\"},{\"lang\":\"es\",\"value\":\"Todas las versiones de los validadores r\u00e1pidos de paquetes son vulnerables a la Denegaci\u00f3n de servicio de expresiones regulares (ReDoS) al validar URL no v\u00e1lidas espec\u00edficamente dise\u00f1adas\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"report@snyk.io\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:express-validators_project:express-validators:*:*:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"B3D7A0CE-9CE9-41EE-AE0F-B1E4BD9034F8\"}]}]}],\"references\":[{\"url\":\"https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404\",\"source\":\"report@snyk.io\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]}]}}",
"redhat_vex": {
"current_release_date": "2026-02-24T01:42:50+00:00",
"cve": "CVE-2020-7767",
"id": "CVE-2020-7767",
"initial_release_date": "2020-11-11T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Regular Expression Denial of Service (ReDoS)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-7767.json",
"version": "3"
}
}
}
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…
Loading…