CVE-2026-63310
NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader module. Attackers can perform man-in-the-middle attacks or DNS poisoning to inject malicious package contents that are extracted without validation.
- Affected products
- Nltk
- CVSS 4.0
- 9.3 CRITICAL
- CVSS 3.1
- 7.1 HIGH
- EPSS
- 0.1% (1th percentile)
- Weakness
- CWE-494
- NVD status
- Received
- Published
- 2026-08-22
CVE-2026-63310 at NVD
No indexed exploits for CVE-2026-63310 yet
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No exploit for CVE-2026-63310 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.