CVE-2024-39705

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 10.8%, top 7% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

NLTK through 3.8.1 allows remote code execution if untrusted packages have pickled Python code, and the integrated data package download functionality is used. This affects, for example, averaged_perceptron_tagger and punkt.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
68.5%
KEV
Not listed

Published

June 27, 2024

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated May 4, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

RCE in Python NLTK (CVE-2024-39705) - vsociety

https://www.vicarius.io/vsociety/posts/rce-in-python-nltk-cve-2024-39705-39706
generic

Remote code execution vulnerability in NLTK · Issue #3266 · nltk/nltk · GitHub

https://github.com/nltk/nltk/issues/3266
generic

Security issues with pickles · Issue #2522 · nltk/nltk · GitHub

https://github.com/nltk/nltk/issues/2522

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
nltk0.8 ... 3.9b1 (60 versions)3.9—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 115 total refreshes for this CVE.

  1. 2026-07-22 14:07 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2024-39705?
CVE-2024-39705 is a critical vulnerability published on June 27, 2024. NLTK through 3.8.1 allows remote code execution if untrusted packages have pickled Python code, and the integrated data package download functionality is used. This affects, for example, averagedperceptrontagger and punkt.
When was CVE-2024-39705 disclosed?
CVE-2024-39705 was first published in the National Vulnerability Database on June 27, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-39705 actively exploited?
CVE-2024-39705 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-39705?
CVE-2024-39705 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-39705?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-39705, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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