1. Home
  2. CVE Database
  3. CVE-2026-81726
HIGH · 7.0

CVE-2026-81726

NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write ...

Vulnerability Description

NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write files outside allowed sandbox roots through TransitionParser, AveragedPerceptron, PerceptronTagger, and maxent parameter APIs when pathsec is enabled.

CVSS Score

7.0

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
LOW

Affected Products

VendorProductVersions
NltkNltk< 3.10.3

Related Weaknesses (CWE)

CWE-73

References

FAQ

What is CVE-2026-81726?

CVE-2026-81726 is a vulnerability with a CVSS score of 7.0 (HIGH). NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write ...

How severe is CVE-2026-81726?

CVE-2026-81726 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-81726?

Check the references section above for vendor advisories and patch information. Affected products include: Nltk Nltk.