high7.5
CVE-2026-62384
NLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that allows attackers to read arbitrary XML files outside the corpus…
Impact
NLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that allows attackers to read arbitrary XML files outside the corpus root. Attackers can place symlinks with names containing no path separators inside the corpus subdirectory, which pass the path validation guard and are resolved to files outside the intended corpus root when accessed via frame_by_name(), _lu_file(), or doc() methods.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | nltk | >= 3.10.0, < 3.10.2 | 3.10.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nltk | Nltk | from 3.10.0 before 3.10.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f833-7jw8-xwrv
- https://github.com/nltk/nltk/security/advisories/GHSA-f833-7jw8-xwrv
- https://nvd.nist.gov/vuln/detail/CVE-2026-62384
- https://github.com/nltk/nltk/pull/3726
- https://github.com/nltk/nltk/commit/736d3212a47de2005b85b785dde6720556d3925d
- https://github.com/nltk/nltk/releases/tag/v3.10.2
- https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3789.yaml
- https://www.vulncheck.com/advisories/nltk-framenetcorpusreader-symlink-sandbox-bypass-before