7.1High
Nltk Nltk
CVE-2026-63310
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
What this means for your business
- It affects Nltk. It matters if your company, or a supplier that handles your data, runs it.
- Code showing how to exploit it has been published, but real attacks have not been confirmed.
- An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
What to do
- 1Check whether your company or your suppliers run Nltk, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H- CVSS v4
- 9.3
- Weakness
- CWE-494
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-08-22
- Last modified
- 2026-09-15
- Sources
- NVD
Affected products
- Nltk Nltk- 3.9.3
As listed in the NVD configuration data. Not a statement about your estate.