187 lines
7.7 KiB
JSON
187 lines
7.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-81722",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-08-27T11:13:14.064Z",
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"datePublished": "2026-08-27T14:51:15.857Z",
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"dateUpdated": "2026-08-27T17:49:54.623Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-08-27T14:51:15.857Z"
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},
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"datePublic": "2026-08-12T00:00:00.000Z",
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"title": "nltk PorterStemmer before 3.10.3 Quadratic-time DoS",
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"descriptions": [
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{
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"lang": "en",
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"value": "nltk PorterStemmer in versions <= 3.10.2 (fixed in 3.10.3) contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem(). The _is_consonant() helper walks backward over the entire run of trailing 'y' characters on every call, and _measure() invokes it for each stem position, causing O(n^2) behavior. A single ~20-50 KB untrusted token consisting of a long run of the letter 'y' followed by a matching suffix (e.g., 'ness') can pin a CPU core for seconds to minutes, causing availability impact."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Inefficient Algorithmic Complexity",
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"cweId": "CWE-407",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "nltk",
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"product": "nltk",
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"defaultStatus": "unaffected",
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"packageURL": "pkg:pypi/nltk",
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"versions": [
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{
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"version": "0",
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"status": "affected",
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"versionType": "semver",
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"lessThan": "3.10.3"
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},
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{
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"version": "3.10.3",
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"status": "unaffected",
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"versionType": "semver"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "3.10.3"
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}
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]
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "NETWORK",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"exploitMaturity": "NOT_DEFINED",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"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",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS"
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"references": [
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{
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"url": "https://github.com/nltk/nltk/security/advisories/GHSA-ww6m-cw3f-q94g",
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"tags": [
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"vendor-advisory"
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],
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"name": "GitHub Security Advisory (GHSA-ww6m-cw3f-q94g)"
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},
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{
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"name": "VulnCheck Advisory: nltk PorterStemmer before 3.10.3 Quadratic-time DoS",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/nltk-porterstemmer-before-3.10.3-quadratic-time-dos"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/nltk/nltk/security/advisories/GHSA-ww6m-cw3f-q94g",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-27T17:49:47.104860Z",
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"id": "CVE-2026-81722",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-27T17:49:54.623Z"
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}
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}
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]
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}
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} |