{"id":"CVE-2026-79675","state":"PUBLISHED","title":"NLTK before 3.10.3 JVM Argument Injection via Per-Call Options","description":"NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java() function, allowing attackers to inject dangerous JVM flags. Attackers can supply malicious options like -agentpath, -javaagent, or @argfile to Stanford wrapper classes to achieve arbitrary code execution.","publishedAt":"2026-08-25T15:16:00.949Z","updatedAt":"2026-08-27T16:24:50.205Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["nltk nltk"],"affected":[{"vendor":"nltk","product":"nltk","packageURL":"pkg:pypi/nltk","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.10.3","versionType":"semver"},{"version":"3.10.3","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/nltk/nltk/security/advisories/GHSA-m4rf-3fr8-xwx3","https://www.vulncheck.com/advisories/nltk-before-jvm-argument-injection-via-per-call-options"],"weaknesses":["CWE-88"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/79xxx/CVE-2026-79675.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-79675","state":"PUBLISHED","datePublished":"2026-08-25T15:16:00.949Z","dateUpdated":"2026-08-27T16:24:50.205Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-25T11:10:13.698Z"},"containers":{"cna":{"title":"NLTK before 3.10.3 JVM Argument Injection via Per-Call Options","descriptions":[{"lang":"en","value":"NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java() function, allowing attackers to inject dangerous JVM flags. Attackers can supply malicious options like -agentpath, -javaagent, or @argfile to Stanford wrapper classes to achieve arbitrary code execution."}],"affected":[{"vendor":"nltk","product":"nltk","packageURL":"pkg:pypi/nltk","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.10.3","versionType":"semver"},{"version":"3.10.3","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-m4rf-3fr8-xwx3","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-m4rf-3fr8-xwx3)"},{"url":"https://www.vulncheck.com/advisories/nltk-before-jvm-argument-injection-via-per-call-options","name":"VulnCheck Advisory: NLTK before 3.10.3 JVM Argument Injection via Per-Call Options","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","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:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-08-25T15:16:00.949Z"},"datePublic":"2026-08-11T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*","versionEndExcluding":"3.10.3"}]}]}],"credits":[{"lang":"en","value":"arpitjain099","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-79675","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-08-26T03:56:24.719999Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-27T16:24:50.205Z"}}]}}}