NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML… (CVE-2026-62385)
NLTK versions before 3.10.0 have a path traversal vulnerability in the FramenetCorpusReader and NKJPCorpusReader components. This flaw allows attackers to supply crafted parameters to certain methods, enabling them to parse and read arbitrary XML files outside the intended corpus root directory. The vulnerability affects methods such as frame_by_name, doc, lu, and header. It has a CVSS score of 5.9, indicating a high severity level.
AI Analysis
Technical Summary
The Natural Language Toolkit (NLTK) library versions prior to 3.10.0 contain a path traversal vulnerability (CVE-2026-62385) in the FramenetCorpusReader and NKJPCorpusReader classes. Attackers can exploit this by providing unsafe selectors or poisoned index state to methods including frame_by_name, doc, lu, and header, which results in the ability to parse XML files located outside the corpus root directory. This can lead to unauthorized reading of arbitrary XML files accessible to the application. The vulnerability is classified under CWE-73 (External Control of File Name or Path) and has a CVSS v3.1 base score of 5.9 with network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to confidentiality.
Potential Impact
Successful exploitation allows an attacker to read arbitrary XML files accessible to the application, potentially exposing sensitive information. The vulnerability does not affect integrity or availability but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in NLTK version 3.10.0 and later. Users should upgrade to version 3.10.0 or newer to remediate this vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes. Patch status is confirmed by the affected version range and CVE data.
NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML… (CVE-2026-62385)
Description
NLTK versions before 3.10.0 have a path traversal vulnerability in the FramenetCorpusReader and NKJPCorpusReader components. This flaw allows attackers to supply crafted parameters to certain methods, enabling them to parse and read arbitrary XML files outside the intended corpus root directory. The vulnerability affects methods such as frame_by_name, doc, lu, and header. It has a CVSS score of 5.9, indicating a high severity level.
CVSS v3.1
Score 5.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Natural Language Toolkit (NLTK) library versions prior to 3.10.0 contain a path traversal vulnerability (CVE-2026-62385) in the FramenetCorpusReader and NKJPCorpusReader classes. Attackers can exploit this by providing unsafe selectors or poisoned index state to methods including frame_by_name, doc, lu, and header, which results in the ability to parse XML files located outside the corpus root directory. This can lead to unauthorized reading of arbitrary XML files accessible to the application. The vulnerability is classified under CWE-73 (External Control of File Name or Path) and has a CVSS v3.1 base score of 5.9 with network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to confidentiality.
Potential Impact
Successful exploitation allows an attacker to read arbitrary XML files accessible to the application, potentially exposing sensitive information. The vulnerability does not affect integrity or availability but compromises confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in NLTK version 3.10.0 and later. Users should upgrade to version 3.10.0 or newer to remediate this vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes. Patch status is confirmed by the affected version range and CVE data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qp76-pq9f-gr9m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-62385"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a8a27f7acd9273b499bc986
Added to database: 08/22/2026, 22:51:35 UTC
Last enriched: 08/22/2026, 22:52:32 UTC
Last updated: 08/23/2026, 01:45:11 UTC
Views: 5
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