HOMEVULNERABILITIESCVE-2026-0846
HIGH

CVE-2026-0846

CWE-36Published: March 9, 2026· Updated: Mar 12, 2026

8.6
CVSS v3.1
EPSS:0.08%probability of exploitation in 30 daysPercentile:22.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-0846 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.6.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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All References (2)

Quick Facts

CVE IDCVE-2026-0846
CVSS Score8.6 / 10
SeverityHIGH
WeaknessCWE-36
CISA KEVNo
EPSS (30d)0.08%
PublishedMar 9, 2026

Related CVEs (CWE-36)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2026-0846 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.