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CVE-2026-0847

7.5 · HIGH

A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple CorpusReader classes, including WordListCorpusReader, TaggedCorpusReader, and Br…

Published Mar 4, 2026CWE-22EPSS 0.92%

Overview

CVE-2026-0847 is a high-severity vulnerability. It was published on March 4, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple CorpusReader classes, including WordListCorpusReader, TaggedCorpusReader, and BracketParseCorpusReader. These classes fail to properly sanitize or validate file paths, enabling attackers to traverse directories and access sensitive files on the server. This issue is particularly critical in scenarios where user-controlled file inputs are processed, such as in machine learning APIs, chatbots, or NLP pipelines. Exploitation of this vulnerability can lead to unauthorized access to sensitive files, including system files, SSH private keys, and API tokens, and may potentially escalate to remote code execution when combined with other vulnerabilities.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refhuntr.com/bounties/fc69914f-36a9-4c18-8503-10013b39f966Refaccess.redhat.com/errata/RHSA-2026:10184Refaccess.redhat.com/errata/RHSA-2026:19712Refaccess.redhat.com/security/cve/CVE-2026-0847Refbugzilla.redhat.com/show_bug.cgi?id=2444608Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0847.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-0847?

CVE-2026-0847 is a high-severity vulnerability. It was published on March 4, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-0847?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-0847?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-0847?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-0847 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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