CVE-2026-0846Arbitrary File Read via Absolute Path Input in nltk.util.filestring()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation of input paths. The function directly opens files specified by user input without sanitization, enabling attackers to access sensitive system files by providing absolute paths or traversal paths. This vulnerability can be exploited locally or remotely, particularly in scenarios where the function is used in web APIs or other interfaces that accept user-supplied input.
- CVSS
- 8.6 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- Weakness (CWE)
- CWE-36, CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- @huntr_ai
- NVD analysis
- Modified
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nltk nltk/nltk nltk:nltk (from the name) | from unspecified through latest | CNA record |
Red Hat Red Hat OpenShift AI 2.25 redhat:openshift_ai | from 1775144403 not affected | CISA ADP |
Red Hat Lightspeed Core redhat:lightspeed_core | All versions | CISA ADP |
Red Hat OpenShift Lightspeed redhat:openshift_lightspeed | Versions not stated | CISA ADP |
Red Hat Red Hat Ansible Automation Platform 2 redhat:ansible_automation_platform | 2 | CISA ADP |
nltk nltk nltk:nltk | 3.9.2 | NVD |
References
- https://huntr.com/bounties/007b84f8-418e-4300-99d0-bf504c2f97ebexploit, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:10184
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/security/cve/CVE-2026-0846
- https://bugzilla.redhat.com/show_bug.cgi?id=2445826
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0846.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.