CVE-2020-26306 (GCVE-0-2020-26306)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:50
VLAI
Title
GHSL-2020-296: Regular Expression Denial of Service (ReDoS) in Knwl.js
Summary
Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:benhmoore:knwl:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "knwl",
"vendor": "benhmoore",
"versions": [
{
"lessThanOrEqual": "1.0.2",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2020-26306",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-28T14:49:13.075631Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-28T14:50:27.620Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Knwl",
"repo": "https://github.com/benhmoore/Knwl",
"vendor": "benhmoore",
"versions": [
{
"lessThanOrEqual": "1.0.2",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eKnwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more\u003c/span\u003e. Versions 1.0.2 and prior\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003econtain one or more regular expressions that are vulnerable to \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eRegular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.\u003c/span\u003e\u003c/span\u003e\u003cbr\u003e"
}
],
"value": "Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "GREEN",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1333",
"description": "CWE-1333 Inefficient Regular Expression Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-10-26T20:26:19.170Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"url": "https://securitylab.github.com/advisories/GHSL-2020-296-redos-Knwl.js/"
},
{
"url": "https://github.com/benhmoore/Knwl/issues/106"
}
],
"source": {
"advisory": "GHSL-2020-296",
"discovery": "UNKNOWN"
},
"title": "GHSL-2020-296: Regular Expression Denial of Service (ReDoS) in Knwl.js",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2020-26306",
"datePublished": "2024-10-26T20:26:19.170Z",
"dateReserved": "2020-10-01T00:00:00.000Z",
"dateUpdated": "2024-10-28T14:50:27.620Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-26306",
"date": "2026-06-03",
"epss": "0.0021",
"percentile": "0.43362"
},
"fkie_nvd": {
"descriptions": "[{\"lang\": \"en\", \"value\": \"Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.\"}, {\"lang\": \"es\", \"value\": \"Knwl.js es una librer\\u00eda de Javascript que analiza textos en busca de fechas, horas, n\\u00fameros de tel\\u00e9fono, correos electr\\u00f3nicos, lugares y m\\u00e1s. Las versiones 1.0.2 y anteriores contienen una o m\\u00e1s expresiones regulares que son vulnerables a la denegaci\\u00f3n de servicio por expresi\\u00f3n regular (ReDoS). Al momento de la publicaci\\u00f3n, no se conocen parches disponibles.\"}]",
"id": "CVE-2020-26306",
"lastModified": "2024-10-28T13:58:09.230",
"metrics": "{\"cvssMetricV40\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"4.0\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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:Green\", \"baseScore\": 8.7, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"vulnerableSystemConfidentiality\": \"NONE\", \"vulnerableSystemIntegrity\": \"NONE\", \"vulnerableSystemAvailability\": \"HIGH\", \"subsequentSystemConfidentiality\": \"NONE\", \"subsequentSystemIntegrity\": \"NONE\", \"subsequentSystemAvailability\": \"NONE\", \"exploitMaturity\": \"NOT_DEFINED\", \"confidentialityRequirements\": \"NOT_DEFINED\", \"integrityRequirements\": \"NOT_DEFINED\", \"availabilityRequirements\": \"NOT_DEFINED\", \"modifiedAttackVector\": \"NOT_DEFINED\", \"modifiedAttackComplexity\": \"NOT_DEFINED\", \"modifiedAttackRequirements\": \"NOT_DEFINED\", \"modifiedPrivilegesRequired\": \"NOT_DEFINED\", \"modifiedUserInteraction\": \"NOT_DEFINED\", \"modifiedVulnerableSystemConfidentiality\": \"NOT_DEFINED\", \"modifiedVulnerableSystemIntegrity\": \"NOT_DEFINED\", \"modifiedVulnerableSystemAvailability\": \"NOT_DEFINED\", \"modifiedSubsequentSystemConfidentiality\": \"NOT_DEFINED\", \"modifiedSubsequentSystemIntegrity\": \"NOT_DEFINED\", \"modifiedSubsequentSystemAvailability\": \"NOT_DEFINED\", \"safety\": \"NOT_DEFINED\", \"automatable\": \"NOT_DEFINED\", \"recovery\": \"NOT_DEFINED\", \"valueDensity\": \"NOT_DEFINED\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\", \"providerUrgency\": \"GREEN\"}}]}",
"published": "2024-10-26T21:15:13.883",
"references": "[{\"url\": \"https://github.com/benhmoore/Knwl/issues/106\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://securitylab.github.com/advisories/GHSL-2020-296-redos-Knwl.js/\", \"source\": \"security-advisories@github.com\"}]",
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-1333\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2020-26306\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-10-26T21:15:13.883\",\"lastModified\":\"2024-10-28T13:58:09.230\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.\"},{\"lang\":\"es\",\"value\":\"Knwl.js es una librer\u00eda de Javascript que analiza textos en busca de fechas, horas, n\u00fameros de tel\u00e9fono, correos electr\u00f3nicos, lugares y m\u00e1s. Las versiones 1.0.2 y anteriores contienen una o m\u00e1s expresiones regulares que son vulnerables a la denegaci\u00f3n de servicio por expresi\u00f3n regular (ReDoS). Al momento de la publicaci\u00f3n, no se conocen parches disponibles.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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:Green\",\"baseScore\":8.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"GREEN\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1333\"}]}],\"references\":[{\"url\":\"https://github.com/benhmoore/Knwl/issues/106\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://securitylab.github.com/advisories/GHSL-2020-296-redos-Knwl.js/\",\"source\":\"security-advisories@github.com\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2020-26306\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-28T14:49:13.075631Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:benhmoore:knwl:*:*:*:*:*:*:*:*\"], \"vendor\": \"benhmoore\", \"product\": \"knwl\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.0.2\"}], \"defaultStatus\": \"unaffected\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-28T14:50:21.989Z\"}}], \"cna\": {\"title\": \"GHSL-2020-296: Regular Expression Denial of Service (ReDoS) in Knwl.js\", \"source\": {\"advisory\": \"GHSL-2020-296\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.7, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green\", \"providerUrgency\": \"GREEN\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/benhmoore/Knwl\", \"vendor\": \"benhmoore\", \"product\": \"Knwl\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.0.2\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://securitylab.github.com/advisories/GHSL-2020-296-redos-Knwl.js/\"}, {\"url\": \"https://github.com/benhmoore/Knwl/issues/106\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eKnwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more\u003c/span\u003e. Versions 1.0.2 and prior\u0026nbsp;\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003econtain one or more regular expressions that are vulnerable to \u003c/span\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eRegular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.\u003c/span\u003e\u003c/span\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1333\", \"description\": \"CWE-1333 Inefficient Regular Expression Complexity\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2024-10-26T20:26:19.170Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2020-26306\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-28T14:50:27.620Z\", \"dateReserved\": \"2020-10-01T00:00:00.000Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-10-26T20:26:19.170Z\", \"assignerShortName\": \"GitHub_M\"}",
"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…
Loading…