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.
Published: 2026-08-27
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 01 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-22
References
Metrics threat_severity

None

threat_severity

Important


Thu, 27 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title NLTK through 3.10.3 Path Traversal via Model-Artifact APIs
First Time appeared Nltk
Nltk nltk
Weaknesses CWE-73
CPEs cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
Vendors & Products Nltk
Nltk nltk
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-27T19:29:23.489Z

Reserved: 2026-08-27T11:15:29.420Z

Link: CVE-2026-81726

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-08-27T17:21:03.387

Modified: 2026-08-31T19:06:49.993

Link: CVE-2026-81726

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-27T14:51:18Z

Links: CVE-2026-81726 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T18:15:04Z

Weaknesses