197 lines
7.9 KiB
JSON
197 lines
7.9 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-80206",
|
|
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "VulnCheck",
|
|
"dateReserved": "2026-08-25T23:15:39.155Z",
|
|
"datePublished": "2026-08-26T10:28:15.035Z",
|
|
"dateUpdated": "2026-08-26T12:52:23.513Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"shortName": "VulnCheck",
|
|
"dateUpdated": "2026-08-26T10:28:15.035Z"
|
|
},
|
|
"datePublic": "2026-08-12T00:00:00.000Z",
|
|
"title": "NLTK 3.10.2 Regular Expression Denial of Service via tgrep",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "NLTK before 3.10.3 contains a regular expression denial of service (ReDoS) vulnerability in the tgrep module. The _tgrep_node_action function compiles user-supplied regular expressions embedded in /regex/ pattern nodes and executes them via re.search against tree node labels without any validation or timeout. An attacker who controls the tgrep pattern (e.g., via tgrep_positions() or tgrep_compile() exposed to external input) can supply a pattern that triggers catastrophic backtracking, causing indefinite CPU saturation that blocks the Python process."
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"description": "Inefficient Regular Expression Complexity",
|
|
"cweId": "CWE-1333",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "nltk",
|
|
"product": "nltk",
|
|
"defaultStatus": "unaffected",
|
|
"packageURL": "pkg:pypi/nltk",
|
|
"versions": [
|
|
{
|
|
"version": "0",
|
|
"status": "affected",
|
|
"versionType": "semver",
|
|
"lessThan": "3.10.3"
|
|
},
|
|
{
|
|
"version": "3.10.3",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*",
|
|
"versionEndExcluding": "3.10.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"cvssV4_0": {
|
|
"version": "4.0",
|
|
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "HIGH",
|
|
"attackRequirements": "PRESENT",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "NONE",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"baseScore": 8.2,
|
|
"baseSeverity": "HIGH"
|
|
}
|
|
},
|
|
{
|
|
"format": "CVSS",
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "HIGH",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"confidentialityImpact": "NONE",
|
|
"integrityImpact": "NONE",
|
|
"availabilityImpact": "HIGH",
|
|
"baseScore": 5.9,
|
|
"baseSeverity": "MEDIUM"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/nltk/nltk/security/advisories/GHSA-w3v8-gmh9-3wv7",
|
|
"tags": [
|
|
"vendor-advisory"
|
|
],
|
|
"name": "GitHub Security Advisory (GHSA-w3v8-gmh9-3wv7)"
|
|
},
|
|
{
|
|
"name": "VulnCheck Advisory: NLTK 3.10.2 Regular Expression Denial of Service via tgrep",
|
|
"tags": [
|
|
"third-party-advisory"
|
|
],
|
|
"url": "https://www.vulncheck.com/advisories/nltk-3.10.2-regular-expression-denial-of-service-via-tgrep"
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"value": "infycore",
|
|
"type": "reporter"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"value": "ekaf",
|
|
"type": "analyst"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"value": "agent-kira",
|
|
"type": "finder"
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "vulncheck-endgame"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/nltk/nltk/security/advisories/GHSA-w3v8-gmh9-3wv7",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-26T12:52:03.078501Z",
|
|
"id": "CVE-2026-80206",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-08-26T12:52:23.513Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |