Description
NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, `nltk.app.wordnet_app` allows unauthenticated remote shutdown of the local WordNet Browser HTTP server when it is started in its default mode. A simple `GET /SHUTDOWN%20THE%20SERVER` request causes the process to terminate immediately via `os._exit(0)`, resulting in a denial of service. Commit bbaae83db86a0f49e00f5b0db44a7254c268de9b patches the issue.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
nltk nltk
<= 3.9.3affected
References
- https://github.com/nltk/nltk/security/advisories/GHSA-jm6w-m3j8-898g ↗
- https://github.com/nltk/nltk/commit/bbaae83db86a0f49e00f5b0db44a7254c268de9b ↗
- https://access.redhat.com/security/cve/CVE-2026-33231 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2449836 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33231.json ↗
- https://access.redhat.com/errata/RHSA-2026:24977 ↗
- https://access.redhat.com/errata/RHSA-2026:65126 ↗
- https://access.redhat.com/errata/RHSA-2026:19712 ↗
- https://access.redhat.com/errata/RHSA-2026:37275 ↗