Review reviewHigh

CVE-2026-0846

nltk nltk/nltk, Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3

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: 7.5
EPSS: 0.43%
CISA KEV: Not listed
Published: 2026.03.10

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.43%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: nltk nltk/nltk, Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3
Affected versions: >= unspecified <= latest, 3.9.2
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that nltk nltk/nltk, Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-22, CWE-36