CVE-2026-12075
High
Description
Natural Language Toolkit (NLTK): DNS-rebinding SSRF filter bypass in nltk.pathsec.urlopen (nltk.download / nltk.data.load) defeats ENFORCE mode
SeverityHigh
CVSS8.6
Exploit probability—
ProductNltk
PublishedJul 31, 2026
First seenJul 31, 2026
How to fix
Update
- nltk3.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nltkPyPI | v < 3.10.0 | 3.10.0 |
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