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nltk: Arbitrary File Read via Path Traversal in nltk.data.load() through Percent-Encoded Sequences
nltk: Arbitrary File Read via Path Traversal in nltk.data.load() through Percent-Encoded Sequences
Affected packages
- nltk— before 3.10.0
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/nltk/nltk/security/advisories/GHSA-m42h-3232-vpv3
- https://nvd.nist.gov/vuln/detail/CVE-2026-12243
- https://github.com/nltk/nltk/issues/3504
- https://github.com/nltk/nltk/pull/3522
- https://github.com/nltk/nltk/commit/aec4fce1b84ad725b8975f7365b23a4f626572a9
- https://github.com/nltk/nltk
- https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-597.yaml
- https://huntr.com/bounties/39aa9354-54ca-4e77-96da-580eb1fe6ed1
- https://securityinfinity.com/research/path-traversal-in-nltks-nltk-data-load-via-percent-encoded-sequences
Structured record: https://osv.dev/vulnerability/GHSA-m42h-3232-vpv3
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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