Advisory details:
github_osv / GHSA-h8wq-7xc4-p3qx
| Advisory ID | github_osv/GHSA-h8wq-7xc4-p3qx |
| Aliases |
CVE-2026-0846
|
| Summary | NLTK has Arbitrary File Read via Absolute Path Input in nltk.util.filestring() A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation of input paths. The function directly opens files specified by user input without sanitization, enabling attackers to access sensitive system files by providing absolute paths or traversal paths. This vulnerability can be exploited locally or remotely, particularly in scenarios where the function is used in web APIs or other interfaces that accept user-supplied input. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 7.7 |
| Risk | 3.9 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-36 | Absolute Path Traversal |
| System | Score | Found at |
|---|---|---|
| cvssv3 | 8.6 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-h8wq-7xc4-p3qx/GHSA-h8wq-7xc4-p3qx.json |
| generic_textual | HIGH |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/nltk/nltk | ||
| https://github.com/nltk/nltk/commit/b2e1164bf89277f79b65406c829b99fb20ca1974 | ||
| https://github.com/nltk/nltk/pull/3485 | ||
| https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-97.yaml | ||
| 007b84f8-418e-4300-99d0-bf504c2f97eb | Other | https://huntr.com/bounties/007b84f8-418e-4300-99d0-bf504c2f97eb |
| CVE-2026-0846 | https://nvd.nist.gov/vuln/detail/CVE-2026-0846 |
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 |
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-12T14:48:03Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/0xxx/CVE-2026-0846.json
Source Advisory: vulnrichment/CVE-2026-0846
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]