جزئیات آسیب‌پذیری
CVE-2026-54293
NLTK: URL-Encoded Path Traversal in nltk.data.load() Allows Arbitrary Local File Read
شرح رسمی (انگلیسی)
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.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 7.5بالا | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 7.5بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Red Hat | Exploit Intelligence | همه | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Ansible Automation Platform 2 | همه | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift AI (RHOAI) | همه | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift AI (RHOAI) | همه | CVEProject cvelistV5 (CNA) |
| nltk | nltk | < 3.10.0-rc1 | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۸- https://github.com/nltk/nltk/pull/3575 x_refsource_MISC
- https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-54293 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2491486 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54293.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:42644 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:65126 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:60520 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۴/۰۱
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۶/۱۸
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- GitHub_M
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- بله
- وضعیت بهره‌برداری
- اثبات مفهوم
- اثر فنی
- جزئی
ضعف‌ها (CWE)
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')