Advisory details:
gitlab / pypi/nltk/CVE-2026-0847
| Advisory ID | gitlab/pypi/nltk/CVE-2026-0847 |
| Aliases |
CVE-2026-0847
GHSA-68j8-pq59-fqgm |
| Summary | NLTK has a Path Traversal issue A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple CorpusReader classes, including WordListCorpusReader, TaggedCorpusReader, and BracketParseCorpusReader. These classes fail to properly sanitize or validate file paths, enabling attackers to traverse directories and access sensitive files on the server. This issue is particularly critical in scenarios where user-controlled file inputs are processed, such as in machine learning APIs, chatbots, or NLP pipelines. Exploitation of this vulnerability can lead to unauthorized access to sensitive files, including system files, SSH private keys, and API tokens, and may potentially escalate to remote code execution when combined with other vulnerabilities. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/nltk/CVE-2026-0847.yml |
| Reference id | Reference type | URL |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2444608 | ||
| https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-98.yaml | ||
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0847.json | ||
| CVE-2026-0847 | https://access.redhat.com/security/cve/CVE-2026-0847 | |
| CVE-2026-0847 | https://nvd.nist.gov/vuln/detail/CVE-2026-0847 | |
| fc69914f-36a9-4c18-8503-10013b39f966 | Other | https://huntr.com/bounties/fc69914f-36a9-4c18-8503-10013b39f966 |
| GHSA-68j8-pq59-fqgm | https://github.com/advisories/GHSA-68j8-pq59-fqgm | |
| RHSA-2026:10184 | Advisory | https://access.redhat.com/errata/RHSA-2026:10184 |
| RHSA-2026:19712 | https://access.redhat.com/errata/RHSA-2026:19712 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
There are no SSVC decisions available.