UNKNOWNPyPI →
NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit wa
NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.
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://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec
- https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3
Structured record: https://osv.dev/vulnerability/PYSEC-2026-3722
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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