{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-54293", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-12T17:46:37.293Z", "datePublished": "2026-06-22T17:25:05.611Z", "dateUpdated": "2026-08-28T12:04:24.058Z" }, "containers": { "cna": { "title": "NLTK: URL-Encoded Path Traversal in nltk.data.load() Allows Arbitrary Local File Read", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" } } ], "references": [ { "name": "https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v" }, { "name": "https://github.com/nltk/nltk/pull/3575", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/nltk/nltk/pull/3575" } ], "affected": [ { "vendor": "nltk", "product": "nltk", "versions": [ { "version": "< 3.10.0-rc1", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-22T17:25:05.611Z" }, "descriptions": [ { "lang": "en", "value": "NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. Prior to 3.10.0-rc1, nltk.data.load() in NLTK is vulnerable to path traversal via URL-encoded path separators and traversal segments when using the nltk: URL scheme. The unsafe-path regex check is performed before url2pathname() decodes the %xx sequences (a classic decode-after-check / TOCTOU-style flaw), allowing an attacker to bypass the protection documented in NLTK's SECURITY.md and read arbitrary files from the filesystem. While literal traversal strings such as ../../../etc/passwd are correctly blocked, encoded variants such as %2fetc%2fpasswd, %2e%2e%2f..., and ..%2f..%2f slip past the regex and are subsequently decoded into a real filesystem path. This vulnerability is fixed in 3.10.0-rc1." } ], "source": { "advisory": "GHSA-p4gq-832x-fm9v", "discovery": "UNKNOWN" } }, "adp": [ { "references": [ { "url": "https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-22T21:18:34.399949Z", "id": "CVE-2026-54293", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "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": "2026-06-22T21:18:59.775Z" } }, { "affected": [ { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:2.25::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-llama-stack-core-rhel9", "product": "Red Hat OpenShift AI 2.25", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1783701598", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-llama-stack-core-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1786635926", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073459", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-trustyai-nemo-guardrails-server-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787330585", "versionType": "rpm" } ] }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:exploit_intelligence:0" ], "defaultStatus": "affected", "packageName": "exploit-intelligence-tech-preview/vulnerability-analysis-rhel9", "product": "Exploit Intelligence", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed/lightspeed-ocp-rag-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:ansible_automation_platform:2" ], "defaultStatus": "affected", "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "affected", "packageName": "rhoai/odh-ta-lmes-job-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "affected", "packageName": "rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" } ], "datePublic": "2026-06-22T17:25:05.611Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in NLTK (Natural Language Toolkit). The `nltk.data.load()` function is vulnerable to path traversal when processing specially crafted `nltk:` URLs. An attacker can exploit a decode-after-check flaw, where URL-encoded path separators and traversal segments bypass security checks. This allows the attacker to read arbitrary files from the filesystem, leading to information disclosure." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-22", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-54293" }, { "name": "RHBZ#2491486", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491486" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54293.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42644" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:60520" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:42644: Red Hat OpenShift AI 2.25" }, { "lang": "en", "value": "RHSA-2026:60520: Red Hat OpenShift AI 3.4" } ], "timeline": [ { "lang": "en", "time": "2026-06-22T19:01:09.319Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-06-22T17:25:05.611Z", "value": "Made public." } ], "title": "nltk: NLTK: Information Disclosure via Path Traversal in `nltk.data.load()`", "workarounds": [ { "lang": "en", "value": "Update the nltk package to version 3.10.0 or later when a stable release is available. Upstream has fixed this issue in 3.10.0-rc1.\n\nUntil updated builds are available, do not pass attacker-controlled resource identifiers to nltk.data.load() when using the nltk: URL scheme. Restrict NLTK data loading to trusted, application-controlled paths." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-28T12:04:24.058Z" } } ] } }