Advisory record · GHSA-pf76-q698-37v8 Withdrawn

Duplicate Advisory: Uncontrolled recursion in nltk.featstruct.FeatStructReader causes unhandled RecursionError (DoS) via deeply nested feature-structure input

CVSS 5.3 Medium

Withdrawn. the GitHub Advisory Database withdrew this advisory on 2 Sept 2026. The record stays here, marked withdrawn.

Published by the GitHub Advisory Database at 27 Aug 2026, 18:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
nltk	PyPI	<=3.10.2	No fixed version yet

Identifiers: GHSA-pf76-q698-37v8
Weakness (CWE): CWE-674
Tags: Denial of service
Published: 27 Aug 2026
Updated: 10 Sept 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 14:29 UTC First seen by agentprime
31 Oct 2026, 14:29 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.