---
id: CVE-2026-12243
title: >-
  Rejected reason: This CVE ID has been rejected or withdrawn by its CVE
  Numbering Authority.
summary: >-
  Rejected reason: This CVE ID has been rejected or withdrawn by its CVE
  Numbering Authority.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
vendor: Red Hat
product: Red Hat OpenShift AI 3.4
affected:
  - exploit_intelligence
  - ansible_automation_platform 2
  - openshift_ai_rhoai
  - openshift_ai 2.25
  - openshift_ai 3.4
patched:
  - openshift_ai 2.25
  - openshift_ai 3.4
published: '2026-06-30'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T14:10:00.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12243'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12243.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-12243'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2494748'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-12243'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12243'
  - url: 'https://huntr.com/bounties/39aa9354-54ca-4e77-96da-580eb1fe6ed1'
  - url: 'https://access.redhat.com/errata/RHSA-2026:65126'
  - url: 'https://access.redhat.com/errata/RHSA-2026:60520'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84734'
  - url: 'https://github.com/nltk/nltk/security/advisories/GHSA-m42h-3232-vpv3'
  - url: 'https://github.com/nltk/nltk/issues/3504'
  - url: 'https://github.com/nltk/nltk/pull/3522'
  - url: >-
      https://github.com/nltk/nltk/commit/aec4fce1b84ad725b8975f7365b23a4f626572a9
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-597.yaml
  - url: >-
      https://securityinfinity.com/research/path-traversal-in-nltks-nltk-data-load-via-percent-encoded-sequences
  - url: 'https://github.com/advisories/GHSA-m42h-3232-vpv3'
tags:
  - nvd
  - exploit-available
  - csaf
  - vex
  - red-hat
  - ghsa
  - pip
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/morzelowski/CVE-2026-12243-NLTK-PoC'
  checkedAt: '2026-10-27T18:52:45.374Z'
exploitAvailable: true
aliases:
  - GHSA-m42h-3232-vpv3
ecosystem: pip
cvssSource: vendor
ingestedAt: '2026-08-13T21:07:31.849Z'
---

## Overview

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-12243)

Affected packages:

- `nltk < 3.10.0`

Patched in:

- `nltk 3.10.0`

Source: https://github.com/advisories/GHSA-m42h-3232-vpv3

## Vendor advisories

- **RHSA-2026:65126** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65126)
- **RHSA-2026:60520** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:60520)
- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)
- **Red Hat VEX** · Important · affected: Exploit Intelligence, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat Ansible Automation Platform 2, Exploit Intelligence, Red Hat OpenShift AI (RHOAI) · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12243.json)