VulnSocial

CVE-2026-33236Disclosure(nltk / nltk)

LOWCVSS 8.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch nltk nltk systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the `subdir` and `id` attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences (such as `../`), which can lead to arbitrary directory creation, arbitrary file creation, and arbitrary file overwrite. Commit 89fe2ec2c6bae6e2e7a46dad65cc34231976ed8a patches the issue.

nltk CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Other references
Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • nltk

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 3 classified signals
  • Peaked 2d ago at 1 mentions (2026-03-20); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
nltk
Products
nltk

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-03-20: 1Mentions · 2026-03-21: 1Mentions · 2026-03-26: 1Patch / Workaround · 2026-03-26: 1Technical Details · 2026-03-20: 1Technical Details · 2026-03-26: 103-2003-2103-26
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • PulsePatch.io@pulsepatchio
    Disclosure

    A path traversal flaw (CVE-2026-33236) impacting `NLTK` downloader components could lead to arbitrary file overwrite. Review `NLTK` usage with untrusted inputs. #NLTK #PathTraversal #InfoSec https://www.pulsepatch.io/posts/cve-2026-33236-nltk-downloader-path-traversal

    Post summary

    The post announces a path traversal vulnerability (CVE-2026-33236) in NLTK that may allow arbitrary file overwrite and recommends reviewing NLTK usage with untrusted inputs.

    0000044
    3 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-33236 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing.… https://www.cve.org/CVERecord?id=CVE-2026-33236

    Post summary

    The snippet simply cites CVE‑2026‑33236 in NLTK and links to the CVE record, providing no details of exploitation or remediation, indicating a basic disclosure.

    00000119
    56.8K followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🟠 CVE-2026-33236 - High NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and pr... https://www.thehackerwire.com/vulnerability/CVE-2026-33236/ https://t.co/cS0AjKnIhu

    Post summary

    NLTK versions 3.9.3 and earlier are affected by CVE‑2026‑33236, a high‑severity vulnerability; further details and references are provided via the linked HackerWire article.

    0000035
    138 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
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