CVE-2026-12876 - NLTK: Uncontrolled resource consumption in RecursiveDescentParser via ambiguous or left-recursive grammars

MEDIUM

NLTK: Uncontrolled resource consumption in RecursiveDescentParser via ambiguous or left-recursive grammars

Published Sep 2, 2026

6.9

MEDIUM

CVSS 4.0

NLTK: Uncontrolled resource consumption in RecursiveDescentParser via ambiguous or left-recursive grammars

No remediation recorded yet.

Weaknesses (2)

CWE-407

CWE-674

Link	Providers	Tags
https://github.com/advisories/GHSA-ff5c-cp5c-9wjf		Advisory
https://github.com/nltk/nltk/commit/43aaca1b9024138421c97f970bf13ee19ac8129d
https://github.com/nltk/nltk/pull/3649
https://github.com/nltk/nltk/releases/tag/v3.10.3
https://github.com/nltk/nltk/security/advisories/GHSA-ff5c-cp5c-9wjf