Vulnerability Description
NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths using built-in open() instead of nltk.pathsec.open(), allowing symlinks to escape trusted roots. Attackers who stage symlinked corpus files under a trusted data root can disclose outside-root content through normal corpus reader methods like channels(), domains(), and synonyms().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nltk | Nltk | < 3.10.3 |
Related Weaknesses (CWE)
References
- https://github.com/nltk/nltk/security/advisories/GHSA-p4rw-rvv2-7xwrExploitVendor Advisory
- https://www.vulncheck.com/advisories/nltk-before-path-traversal-via-symlink-bypaThird Party Advisory
- https://github.com/nltk/nltk/security/advisories/GHSA-p4rw-rvv2-7xwrExploitVendor Advisory
FAQ
What is CVE-2026-79676?
CVE-2026-79676 is a vulnerability with a CVSS score of 5.9 (MEDIUM). NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths using built-in open() instead of nltk.pathsec.open(), allowing symlinks to escape tr...
How severe is CVE-2026-79676?
CVE-2026-79676 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-79676?
Check the references section above for vendor advisories and patch information. Affected products include: Nltk Nltk.