Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
NLTK before 3.10.3 contains a regular expression denial of service vulnerability in Pl196xCorpusReader that allows attackers to cause quadratic CPU consumption by supplying malformed TEI blocks with many unmatched opening tags. Attackers can exploit lazy regex patterns in the read_block method through public APIs like words() and tagged_words() to force repeated rescans and achieve near-quadratic runtime growth.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
🟠 NLTK (Natural Language Toolkit), Regular Expression Denial of Service (ReDoS), #CVE-2026-81725 (MEDIUM) -DC-Sep2026-2250 https://dailycve.com/nltk-natural-language-toolkit-regular-expression-denial-of-service-redos-cve-2026-81725-medium-dc-sep2026-2250/
Post summary
The entry announces a medium‑severity ReDoS vulnerability in NLTK (CVE‑2026‑81725); it provides basic technical information but no PoC, exploit, or mitigation details.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | nltk | nltk | - | - | - |