CVE-2026-0847Disclosure(nltk / nltk)

LOWCVSS 7.5 · 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

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.

0.5/ 10 priority

Sources & remediation

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
  • 10 mentions across 7 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 8 signals
  • Disclosure: 8 classified signals
  • General: 1 classified signal
  • Peaked 6d ago at 2 mentions (2026-03-04); latest day: 1
  • 10 total mentions across 7 days

Affected systems

Vendors
Products
nltk

Deep dive

Activity timeline10 mentions / 7d
01122Mentions · 2026-03-04: 2Mentions · 2026-03-05: 2Mentions · 2026-03-07: 1Mentions · 2026-03-09: 1Mentions · 2026-03-14: 2Mentions · 2026-03-16: 1Mentions · 2026-06-16: 1Patch / Workaround · 2026-03-14: 1Technical Details · 2026-03-04: 2Technical Details · 2026-03-05: 2Technical Details · 2026-03-07: 1Technical Details · 2026-03-14: 1Technical Details · 2026-03-16: 1Technical Details · 2026-06-16: 103-0403-0503-0703-0903-1403-1606-16
Signal classification3 categories
Disclosure
880.0%
General
110.0%
Patch
110.0%
Referenced assets9 URLs
Classification over time
DateTotalLabels
2026-03-042
Disclosure2
2026-03-052
Disclosure2
2026-03-071
Disclosure1
2026-03-091
General1
2026-03-142
Disclosure1Patch1
2026-03-161
Disclosure1
2026-06-161
Disclosure1
Full discourse10 posts
  • Ferramentas Linux@Cezar_H_Linux
    Patch

    🚨 URGENT SECURITY PATCH FOR MAGEIA 9 USERS 🚨 A new path traversal vulnerability (CVE-2026-0847) has been discovered in the popular #Python Natural Language Toolkit (NLTK). Read more: 👉 https://tinyurl.com/chrh5ckn #Security #Mageia https://t.co/zlY6oJedYa

    Post summary

    The post announces an urgent patch for Mageia 9 due to a newly discovered path traversal flaw in NLTK and directs readers to a link for further details.

    0001050
    1.3K followersView on X
  • Prateek Tomar@TomarPrateek23
    General

    New security insights: Critical Analysis CVE-2026-0847 - A vulnerability in NLTK versions up to and.... Fresh perspectives on defensive strategies. Read more: https://threatops.tech/blog/critical-analysis-cve-2026-0847-a-vulnerability-in-nltk-versions-up-to-and-including-392-a-m

    Post summary

    The text points to a blog article about CVE-2026-0847 but does not provide actionable or technical details, exploit code, or patch information.

    0001082
    91 followersView on X
  • CVEFind.com@CveFindCom
    Disclosure

    [CVE-2026-0847: HIGH] Critical vulnerability in NLTK versions allows arbitrary file read via path traversal in CorpusReader classes, enabling attackers to access sensitive files and potentially escalate to rem...#cve,CVE-2026-0847,#cybersecurity https://cvefind.com/CVE-2026-0847

    Post summary

    The tweet announces CVE‑2026‑0847 as a high‑severity path‑traversal flaw in NLTK that allows arbitrary file reads, but provides no PoC, exploit, or mitigation details.

    0001054
    597 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-0847 A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple CorpusReader classes, including WordListCorpusReade… https://www.cve.org/CVERecord?id=CVE-2026-0847

    Post summary

    The CVE describes a path‑traversal flaw that enables arbitrary file reads in NLTK up to version 3.9.2, without mentioning a PoC, exploit code, or active exploitation.

    0001080
    56.6K followersView on X
  • DailyCVE@dailycve
    Disclosure

    🔴 NLTK, Path Traversal, #CVE-2026-0847 (High) -DC-Jun2026-476 https://dailycve.com/nltk-path-traversal-cve-2026-0847-high-dc-jun2026-476/

    Post summary

    The text announces a high‑severity Path Traversal flaw (CVE‑2026‑0847) in NLTK.

    0000042
    213 followersView on X
  • Prateek Tomar@Prateektomar
    Disclosure

    Just published: Critical Analysis CVE-2026-0847 - A vulnerability in NLTK versions up to and.... Practical security guidance from the trenches. Read more: https://threatops.tech/blog/critical-analysis-cve-2026-0847-a-vulnerability-in-nltk-versions-up-to-and-including-392-a-march

    Post summary

    A blog post announces CVE-2026-0847, a vulnerability in NLTK affecting versions up to 3.9.2, but provides no PoC, exploit code, active exploitation evidence, or patch information.

    0000059
    99 followersView on X
  • Prateek Tomar@Prateektomar
    Disclosure

    New security insights: Critical Analysis CVE-2026-0847 - A vulnerability in NLTK versions up to and.... Fresh perspectives on defensive strategies. Read more: https://threatops.tech/blog/critical-analysis-cve-2026-0847-a-vulnerability-in-nltk-versions-up-to-and-including-392-a-m

    Post summary

    The post provides a brief mention of CVE‑2026‑0847 affecting NLTK versions, framing it as a new vulnerability but offers no PoC, exploit details, patch info or evidence of active exploitation.

    0000039
    98 followersView on X
  • Prateek Tomar@TomarPrateek23
    Disclosure

    A critical vulnerability (CVE-2026-0847) has been identified in the widely used Python NLP library NLTK. The issue affects versions up to 3.9.2 and could potentially allow remote code execution if malicious packages are downloaded and extracted without proper validation—a risk for many AI/ML pipelines relying on automated model downloads. https://threatops.tech/blog/critical-analysis-cve-2026-0847-a-vulnerability-in-nltk-versions-up-to-and-including-392-a-march-7-2 #CyberSecurity, #PythonSecurity, #NLTK, #CVE, #AIsecurity, #MachineLearningSecurity, #ThreatResearch, #ThreatOps, #AppSec, #Infosec

    Post summary

    A new CVE (CVE-2026-0847) in NLTK that potentially allows remote code execution via unvalidated package downloads has been identified, with affected versions up to 3.9.2; no active exploitation, patch, or PoC details are provided.

    0000043
    91 followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🟠 CVE-2026-0847 - 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, a... https://www.thehackerwire.com/vulnerability/CVE-2026-0847/ https://t.co/GvO4ZCHw6q

    Post summary

    The text announces CVE‑2026‑0847, a path‑traversal vulnerability in NLTK up to version 3.9.2 that permits arbitrary file reads, without mentioning PoC, exploitation, or patches.

    0000046
    124 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-0847 Path Traversal Vulnerability in NLTK Corpus Readers Enabling Arbitrary File Read https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-0847

    Post summary

    The text announces CVE-2026-0847 as a path‑traversal flaw in NLTK Corpus Readers that permits arbitrary file reads, but it provides no evidence of exploits, PoCs, or patches.

    0000043
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appnltknltk---

Explore more