{"id":"CVE-2026-65915","state":"PUBLISHED","title":"NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer","description":"NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials and configuration files.","publishedAt":"2026-08-22T14:12:41.391Z","updatedAt":"2026-08-24T19:20:52.747Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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":"3.10.0","versionType":"semver"},{"version":"3.10.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/nltk/nltk/security/advisories/GHSA-72r2-7mfr-5xr9","https://www.vulncheck.com/advisories/nltk-before-arbitrary-file-read-via-filesystempathpointer"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/65xxx/CVE-2026-65915.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-65915","state":"PUBLISHED","datePublished":"2026-08-22T14:12:41.391Z","dateUpdated":"2026-08-24T19:20:52.747Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-07-23T12:51:09.595Z"},"containers":{"cna":{"title":"NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer","descriptions":[{"lang":"en","value":"NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials and configuration files."}],"affected":[{"vendor":"nltk","product":"nltk","packageURL":"pkg:pypi/nltk","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.10.0","versionType":"semver"},{"version":"3.10.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-72r2-7mfr-5xr9","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-72r2-7mfr-5xr9)"},{"url":"https://www.vulncheck.com/advisories/nltk-before-arbitrary-file-read-via-filesystempathpointer","name":"VulnCheck Advisory: NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"Improper Access Control","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-08-22T14:12:41.391Z"},"datePublic":"2026-08-07T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*","versionEndExcluding":"3.10.0"}]}]}],"credits":[{"lang":"en","value":"ZeroXJacks","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-72r2-7mfr-5xr9","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-24T19:20:34.826563Z","id":"CVE-2026-65915","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-24T19:20:52.747Z"}}]}}}